fork download
copy 
  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. #define MAX 100	/*maximum no. of characters*/
  5.  
  6. /*stack variables*/
  7. int top=-1;
  8. int item;
  9. /***************/
  10.  
  11. /*string declaration*/
  12. char stack_string[MAX];
  13.  
  14. /*function to push character (item)*/
  15. void pushChar(char item);
  16.  
  17. /*function to pop character (item)*/
  18. char popChar(void);
  19.  
  20. /*function to check stack is empty or not*/
  21. int isEmpty(void);
  22.  
  23. /*function to check stack is full or not*/
  24. int isFull(void);
  25.  
  26. int main()
  27. {
  28.     char str[MAX];
  29.  
  30.     int i;
  31.  
  32.     printf("Input a string: ");
  33.     scanf("%[^\n]s",str); /*read string with spaces*/
  34.     /*gets(str);-can be used to read string with spaces*/
  35.  
  36.     for(i=0;i<strlen(str);i++)
  37.         pushChar(str[i]);
  38.  
  39.     for(i=0;i<strlen(str);i++)
  40.         str[i]=popChar();
  41.  
  42.     printf("Reversed String is: %s\n",str);
  43.  
  44.     return 0;
  45. }
  46.  
  47. /*function definition of pushChar*/
  48. void pushChar(char item)
  49. {
  50.     /*check for full*/
  51.     if(isFull())
  52.     {
  53.         printf("\nStack is FULL !!!\n");
  54.         return;
  55.     }
  56.  
  57.     /*increase top and push item in stack*/
  58.     top=top+1;
  59.     stack_string[top]=item;
  60. }
  61.  
  62. /*function definition of popChar*/
  63.  char popChar()
  64. {
  65.     /*check for empty*/
  66.     if(isEmpty())
  67.     {
  68.         printf("\nStack is EMPTY!!!\n");
  69.         return 0;
  70.     }
  71.  
  72.     /*pop item and decrease top*/
  73.     item = stack_string[top];
  74.     top=top-1;
  75.     return item;
  76. }
  77.  
  78. /*function definition of isEmpty*/
  79. int isEmpty()
  80. {
  81.     if(top==-1)
  82.         return 1;
  83.     else
  84.         return 0;
  85. }
  86.  
  87. /*function definition of isFull*/ 
  88. int isFull()
  89. {
  90.     if(top==MAX-1)
  91.         return 1;
  92.     else
  93.         return 0;
  94. }
Success #stdin #stdout 0s 5480KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Input a string: Reversed String is:
https://ideone.com/f6Zjh5
language:
C99 (gcc 8.3)
created:
1 year ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!