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#include <stdio.h>
//Function prototypes
double SuperShrink(double value);
double Shrink(double value)
int Square(int value);
int Cube(int value);
int main ()
{
/* variable definition: */
int intValue, menuSelect,Results;
double dblValue,db1Results;
intValue = 1;
// While a positive number
while (intValue > 0)
{
printf ("Enter a positive Integer\n: ");
scanf("%d", &intValue);
if(intValue>0)
{
print (Enter a positive Interger\n:");
scanf("%d",&intValue);
if(intValue>0)
{
db1Value=intValue;	
printf ("Enter 1 to calculate Square, 2 to Calculate Cube ,3 to Shrink, 4 to supershrink\n: ");
scanf("%d", &menuSelect);
if (menuSelect == 1)
{
// Call the Square Function
Results = Square(intValue);
printf("Square of %d is %d\n",intValue,Results);
}
else if (menuSelect == 2)
{
// Call the Cube function
Results = Cube(intValue);
printf("Cube of %d is %d\n",intValue,Results);
}
else if (menuSelect == 3)
{
// Call the Shrink function
db1Results = Shrink(db1Value);
printf("Shrink of %d is %f\n",intValue,db1Results);
}
else (menuSelect=4)
{
//Call the Shrink function
db1Results = SuperShrink(db1Value);
printf("SuperShrink of %d is %f\n",intValue,db1Results);
}
else
printf("Invalid menu item, only 1, 2 or 3 is accepted\n");
}
}
return 0;
}
/* function returning the Square of a number */
int Square(int value)
{ return value*value;
}
/* function returning the Cube of a number */
int Cube(int value)
{ return value*value*value;
}
//function returning the Shrink of a number 
double shrink (double value)
{ 
return value/2;
}
//function returning the Shrink of a number 
double Supershrink (double value)
{ return value/4;
}
 

prog.c: In function ‘Shrink’:
prog.c:8:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
prog.c:20:33: error: stray ‘\’ in program
 print (Enter a positive Interger\n:");
                                 ^
prog.c:20:36: warning: missing terminating " character
 print (Enter a positive Interger\n:");
                                    ^
prog.c:20:36: error: missing terminating " character
 print (Enter a positive Interger\n:");
                                    ^~~
prog.c:4:8: error: old-style parameter declarations in prototyped function definition
 double Shrink(double value)
        ^~~~~~
prog.c:73:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Standard output is empty