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1.What is the output of the following code?
 
#include<stdio.h>
 
main()
 
{
 
int x=100;
 
int *p;
 
int **r;
 
p=&x;
 
r=p;
 
printf("%d",*r);
 
}
 
i.100
 
ii.Garbage Value
 
iii.Warning: Assignment from Incompatible Pointer type
 
iv.Runtime Error.
Select one:
a. Both iii and iv Incorrect
b. Both ii and iii
c. Only iv
d. Both i and iii
e. Only i
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The correct answer is: Both i and iii
Question 2
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What will be output if you will compile and execute the following c code?
 
void main(){
 
   float a=5.2;
 
  if(a==5.2)
 
     printf("Equal");
 
  else if(a<5.2)
 
     printf("Less than");
 
  else
 
     printf("Greater than");
 
}
Select one:
a. Less than
b. Equal Incorrect
c. Greater than
d. Compiler Error
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The correct answer is: Less than
Question 3
Incorrect
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1.Which of the following will be the correct output for the program given below?
 
#include<stdio.h>
 
int main()
 
{
 
int arr[2][2][2] = {10,2,3,4,5,6,7,8};
 
int *p,*q;
 
p = &arr[1][1][1];
 
q=(int * ) arr;
 
printf("%d%d\n”,*p,*q);
 
return 0;
}
Select one:
a. 8  1
b. 10  2
c. Garbage Values Incorrect
d. 8  10
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The correct answer is: 8  10
Question 4
Correct
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1.Which of the following statements are correct about the C program given below?
 
#include<stdio.h>
 
int main()
 
{
 
int size;
 
scanf("%d”, &size);
 
int arr[size];
 
for(i=1;i<=size;i++)
 
{
 
scanf("%d”,arr[i]);
 
printf("%d\n”,arr[i]);
 
}
 
return 0;
 
}
 
a.The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
 
b.The code is erroneous since the values of array are getting scanned through a loop.
 
c.The code is erroneous since the statement declaring array is invalid.
 
d.The code is erroneous since the type declaration statementint arr[size]; is done after scanf().
Select one:
a. a,b
b. c,d Correct
c. a,c
d. b,c
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The correct answer is: c,d
Question 5
Correct
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1.What is the output of the following code?
 
#include<stdio.h>
 
main()
 
{
 
float x;
 
x=3.14f*6+10/4*2;
 
printf("%f",x);
 
}
Select one:
a. 20.09
b. 22.84 Correct
c. 19.84
d. 23.84
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The correct answer is: 22.84
Question 6
Incorrect
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What will be output if you will compile and execute the following c code?
 
void main(){
 
char c=125;
 
    c=c+10;
 
    printf("%d",c);
 
}
Select one:
a. 135
b. Compiler Error Incorrect
c. -121
d. INF
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The correct answer is: -121
Question 7
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1.What is the output of the following code?
 
#include<stdio.h>
 
#define TRIPLE(X) X+X+X
 
main()
 
{
 
int x=5,y=3;
 
printf("%d",++TRIPLE(x)*TRIPLE(y)++);
 
}
Select one:
a. 32
b. 144 Incorrect
c. 36
d. 137
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The correct answer is: 36
Question 8
Correct
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What will be output if you will execute following c code?
 
#include<stdio.h>
 
int main()
 
{
 
printf("%d","abcde"-"abcde");
 
return 0;
           }
Select one:
a. Garbage Correct
b. 0
c. -1
d. 1
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The correct answer is: Garbage
Question 9
Correct
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What will be output if you will compile and execute the following c code?
 
#include "stdio.h"
 
#include "string.h"
 
void main(){
 
  int i=0;
 
  for(;i<=2;)
 
   printf(" %d",++i);
 
}
Select one:
a. 123 Correct
b. 012
c. Infinite Loop
d. 0123
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The correct answer is: 123
Question 10
Correct
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What will be output if you will compile and execute the following c code?
 
#define x 5+2
 
void main(){
 
    int i;
 
    i=x*x*x;
 
    printf("%d",i);
 
}
Select one:
a. Compiler error
b. 27 Correct
c. 133
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The correct answer is: 27
Question 11
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1.What is the output of the following code?
 
#include<stdio.h>
 
#include<string.h>
 
main()
 
{
 
char s1[10]={'\a','\n','\r','\0','\b','\t'};
 
printf("%d %d",strlen(s1),sizeof(s1));
 
}
Select one:
a. 6  7
b. 3  10
c. 6  10 Incorrect
d. 3  4
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The correct answer is: 3  10
Question 12
Correct
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1.Which of the following statements is correct about the program given below?
 
# include<stdio.h>
 
int main()
 
{
 
int arr[3][3] = {1,2,3,4};
 
printf("%d\n”,*(*(*(arr))));
 
return 0;
}
Select one:
a. It will report an error: 'Invalid Indirection ' Correct
b. It will output a garbage value
c. It will output a value 3
d. It will output a value 1
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Your answer is correct.
The correct answer is: It will report an error: 'Invalid Indirection '
Question 13
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What will be output if you will compile and execute the following c code?
 
void main(){
 
  int i=4,x;
 
  x=++i + ++i + ++i;
 
  printf("%d",x);
 
}
Select one:
a. 18 Incorrect
b. 12
c. 9
d. 21
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The correct answer is: 21
Question 14
Correct
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1.#include<stdio.h>
 
int fn1()
 
{
 
static int x;
 
return x+1;
 
}
 
main()
 
{
 
int i;
 
for(i=0;i<10;i++)
 
printf("%d ",fn1());
 
}
 
What does the above program print?
Select one:
a. Prints integer from 1 to 10
b. Prints 1 10 times Correct
c. Prints 0 10 times
d. Prints integer from 0 to 9
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Your answer is correct.
The correct answer is: Prints 1 10 times
Question 15
Correct
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A pointer to a block of memory is effectively same as an array
Select one:
True Correct
False
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The correct answer is 'True'.
Question 16
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1.What will be output if you will execute following c code?
 
#include<stdio.h>
 
int main(){
 
int arr[]={6,12,18,24};
 
int x=0;
 
x=arr[1]+(arr[1]=2);
 
printf("%d",x);
 
return 0;
}
Select one:
a. 8
b. Compilation Error Incorrect
c. 4
d. 14
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The correct answer is: 4
Question 17
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What will be output if you will compile and execute the following c code?
 
void main(){
 
  int x;
 
  for(x=1;x<=5;x++);
 
    printf("%d",x);
 
}
Select one:
a. 6
b. 5
c. None of the above Incorrect
d. 4
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The correct answer is: 6
Question 18
Correct
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    Arrange the following operators with respect to decreasing order of precedence.
1. Arithmetic         2. Logical            3. Relational            4. Decrement
Select one:
a. 4,1,3,2
b. 4,2,3,1
c. 4,1,3,2 Correct
d. 4,3,2,1
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Your answer is correct.
The correct answer is: 4,1,3,2
Question 19
Correct
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1.What is the output of the following code?
 
#include<stdio.h>
 
main()
 
{
 
int i,j,x=0;
 
for(i=0;i<=2;i++)
 
for(j=0;j<=5;j++)
 
{
 
x++;
 
if(x<4)
 
printf("%d",x);
 
else
 
x--;
 
}
 
}
Select one:
a. 123333333
b. 111222333
c. 123 Correct
d. 123321123
e. 123222111
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Your answer is correct.
The correct answer is: 123
Question 20
Correct
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What will be output if you will compile and execute the following c code?
 
void main(){
 
   char *str="Hello world";
 
   printf("%d",printf("%s",str));
 
}
Select one:
a. Hello world11 Correct
b. 10Hello world
c. Hello world10
d. 11Hello world
Feedback
Your answer is correct.
The correct answer is: Hello world11
 

prog.c:1:1: error: invalid suffix "What" on floating constant
 1.What is the output of the following code?
 ^
prog.c:1:1: error: expected identifier or '(' before numeric constant
In file included from /usr/include/stdio.h:74:0,
                 from prog.c:3:
/usr/include/libio.h:306:3: error: unknown type name 'size_t'
   size_t __pad5;
   ^
/usr/include/libio.h:310:67: error: 'size_t' undeclared here (not in a function)
   char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
                                                                   ^
/usr/include/libio.h:338:62: error: expected declaration specifiers or '...' before 'size_t'
 typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
                                                              ^
/usr/include/libio.h:347:6: error: expected declaration specifiers or '...' before 'size_t'
      size_t __n);
      ^
/usr/include/libio.h:469:19: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_IO_sgetn'
 extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t);
                   ^
In file included from prog.c:3:0:
/usr/include/stdio.h:337:20: error: expected declaration specifiers or '...' before 'size_t'
       int __modes, size_t __n) __THROW;
                    ^
/usr/include/stdio.h:386:44: error: expected declaration specifiers or '...' before 'size_t'
 extern int snprintf (char *__restrict __s, size_t __maxlen,
                                            ^
/usr/include/stdio.h:390:45: error: expected declaration specifiers or '...' before 'size_t'
 extern int vsnprintf (char *__restrict __s, size_t __maxlen,
                                             ^
/usr/include/stdio.h:709:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'fread'
 extern size_t fread (void *__restrict __ptr, size_t __size,
               ^
/usr/include/stdio.h:715:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'fwrite'
 extern size_t fwrite (const void *__restrict __ptr, size_t __size,
               ^
prog.c:5:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^
prog.c: In function 'main':
prog.c:17:2: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
 r=p;
  ^
prog.c:19:8: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int *' [-Wformat=]
 printf("%d",*r);
        ^
prog.c: At top level:
prog.c:23:2: error: expected '=', ',', ';', 'asm' or '__attribute__' before numeric constant
 i.100
  ^
prog.c:64:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:64:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:78:1: error: invalid suffix "Which" on floating constant
 1.Which of the following will be the correct output for the program given below?
 ^
prog.c:94:8: warning: missing terminating " character
 printf("%d%d\n”,*p,*q);
        ^
prog.c:94:1: error: missing terminating " character
 printf("%d%d\n”,*p,*q);
 ^
prog.c:98:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:98:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:112:1: error: invalid suffix "Which" on floating constant
 1.Which of the following statements are correct about the C program given below?
 ^
prog.c:122:7: warning: missing terminating " character
 scanf("%d”, &size);
       ^
prog.c:122:1: error: missing terminating " character
 scanf("%d”, &size);
 ^
prog.c:130:7: warning: missing terminating " character
 scanf("%d”,arr[i]);
       ^
prog.c:130:1: error: missing terminating " character
 scanf("%d”,arr[i]);
 ^
prog.c:132:8: warning: missing terminating " character
 printf("%d\n”,arr[i]);
        ^
prog.c:132:1: error: missing terminating " character
 printf("%d\n”,arr[i]);
 ^
prog.c:140:2: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
 a.The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
  ^
prog.c:146:76: error: unknown type name 'is'
 d.The code is erroneous since the type declaration statementint arr[size]; is done after scanf().
                                                                            ^
prog.c:146:84: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'after'
 d.The code is erroneous since the type declaration statementint arr[size]; is done after scanf().
                                                                                    ^
prog.c:146:84: error: unknown type name 'after'
prog.c:161:1: error: invalid suffix "What" on floating constant
 1.What is the output of the following code?
 ^
prog.c:176:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:176:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:201:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:201:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:215:1: error: invalid suffix "What" on floating constant
 1.What is the output of the following code?
 ^
prog.c:230:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:230:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:256:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:256:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
In file included from prog.c:274:0:
/usr/include/string.h:50:56: error: expected declaration specifiers or '...' before 'size_t'
 extern void *memmove (void *__dest, const void *__src, size_t __n)
                                                        ^
/usr/include/string.h:66:42: error: expected declaration specifiers or '...' before 'size_t'
 extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1));
                                          ^
/usr/include/string.h:69:56: error: expected declaration specifiers or '...' before 'size_t'
 extern int memcmp (const void *__s1, const void *__s2, size_t __n)
                                                        ^
/usr/include/string.h:96:48: error: expected declaration specifiers or '...' before 'size_t'
 extern void *memchr (const void *__s, int __c, size_t __n)
                                                ^
/usr/include/string.h:133:39: error: expected declaration specifiers or '...' before 'size_t'
         const char *__restrict __src, size_t __n)
                                       ^
/usr/include/string.h:141:9: error: expected declaration specifiers or '...' before 'size_t'
         size_t __n) __THROW __nonnull ((1, 2));
         ^
/usr/include/string.h:147:57: error: expected declaration specifiers or '...' before 'size_t'
 extern int strncmp (const char *__s1, const char *__s2, size_t __n)
                                                         ^
/usr/include/string.h:154:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'strxfrm'
 extern size_t strxfrm (char *__restrict __dest,
               ^
/usr/include/string.h:285:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'strcspn'
 extern size_t strcspn (const char *__s, const char *__reject)
               ^
/usr/include/string.h:289:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'strspn'
 extern size_t strspn (const char *__s, const char *__accept)
               ^
/usr/include/string.h:399:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'strlen'
 extern size_t strlen (const char *__s)
               ^
/usr/include/string.h:451:33: error: expected declaration specifiers or '...' before 'size_t'
 extern void __bzero (void *__s, size_t __n) __THROW __nonnull ((1));
                                 ^
In file included from /usr/include/string.h:635:0,
                 from prog.c:274:
/usr/include/i386-linux-gnu/bits/string2.h:945:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c1'
 __STRING_INLINE size_t __strcspn_c1 (const char *__s, int __reject);
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:947:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c1'
 __strcspn_c1 (const char *__s, int __reject)
 ^
/usr/include/i386-linux-gnu/bits/string2.h:955:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c2'
 __STRING_INLINE size_t __strcspn_c2 (const char *__s, int __reject1,
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:958:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c2'
 __strcspn_c2 (const char *__s, int __reject1, int __reject2)
 ^
/usr/include/i386-linux-gnu/bits/string2.h:967:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c3'
 __STRING_INLINE size_t __strcspn_c3 (const char *__s, int __reject1,
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:970:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strcspn_c3'
 __strcspn_c3 (const char *__s, int __reject1, int __reject2,
 ^
/usr/include/i386-linux-gnu/bits/string2.h:1021:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c1'
 __STRING_INLINE size_t __strspn_c1 (const char *__s, int __accept);
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:1023:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c1'
 __strspn_c1 (const char *__s, int __accept)
 ^
/usr/include/i386-linux-gnu/bits/string2.h:1032:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c2'
 __STRING_INLINE size_t __strspn_c2 (const char *__s, int __accept1,
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:1035:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c2'
 __strspn_c2 (const char *__s, int __accept1, int __accept2)
 ^
/usr/include/i386-linux-gnu/bits/string2.h:1044:24: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c3'
 __STRING_INLINE size_t __strspn_c3 (const char *__s, int __accept1,
                        ^
/usr/include/i386-linux-gnu/bits/string2.h:1047:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__strspn_c3'
 __strspn_c3 (const char *__s, int __accept1, int __accept2, int __accept3)
 ^
/usr/include/i386-linux-gnu/bits/string2.h: In function '__strpbrk_c2':
/usr/include/i386-linux-gnu/bits/string2.h:1105:50: error: expected ';' before '__s'
   return *__s == '\0' ? NULL : (char *) (size_t) __s;
                                                  ^
/usr/include/i386-linux-gnu/bits/string2.h: In function '__strpbrk_c3':
/usr/include/i386-linux-gnu/bits/string2.h:1117:50: error: expected ';' before '__s'
   return *__s == '\0' ? NULL : (char *) (size_t) __s;
                                                  ^
prog.c: At top level:
prog.c:276:6: warning: return type of 'main' is not 'int' [-Wmain]
 void main(){
      ^
prog.c:276:6: error: conflicting types for 'main'
prog.c:5:1: note: previous definition of 'main' was here
 main()
 ^
prog.c:285:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:285:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:312:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:312:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:325:1: error: invalid suffix "What" on floating constant
 1.What is the output of the following code?
 ^
prog.c:340:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:340:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:354:1: error: invalid suffix "Which" on floating constant
 1.Which of the following statements is correct about the program given below?
 ^
prog.c:364:8: warning: missing terminating " character
 printf("%d\n”,*(*(*(arr))));
        ^
prog.c:364:1: error: missing terminating " character
 printf("%d\n”,*(*(*(arr))));
 ^
prog.c:368:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:368:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:369:29: warning: character constant too long for its type
 a. It will report an error: 'Invalid Indirection ' Correct
                             ^
prog.c:375:49: warning: character constant too long for its type
 The correct answer is: It will report an error: 'Invalid Indirection '
                                                 ^
prog.c:393:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:393:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:407:3: error: stray '#' in program
 1.#include<stdio.h>
   ^
prog.c:419:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^
prog.c:419:1: error: redefinition of 'main'
prog.c:5:1: note: previous definition of 'main' was here
 main()
 ^
prog.c: In function 'main':
prog.c:427:14: warning: implicit declaration of function 'fn1' [-Wimplicit-function-declaration]
 printf("%d ",fn1());
              ^
prog.c: At top level:
prog.c:431:1: error: unknown type name 'What'
 What does the above program print?
 ^
prog.c:431:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'the'
 What does the above program print?
           ^
prog.c:431:11: error: unknown type name 'the'
prog.c:451:23: warning: multi-character character constant [-Wmultichar]
 The correct answer is 'True'.
                       ^
prog.c:458:1: error: invalid suffix "What" on floating constant
 1.What will be output if you will execute following c code?
 ^
prog.c:474:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:474:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:499:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:499:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:529:1: error: invalid suffix "What" on floating constant
 1.What is the output of the following code?
 ^
prog.c:558:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:558:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:582:1: error: unknown type name 'Select'
 Select one:
 ^
prog.c:582:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 Select one:
           ^
prog.c:584:4: error: invalid suffix "Hello" on integer constant
 b. 10Hello world
    ^
prog.c:586:4: error: invalid suffix "Hello" on integer constant
 d. 11Hello world
    ^

Standard output is empty