Array of function pointer : Function Pointer « Function « C / ANSI-C

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C / ANSI-C » Function » Function PointerScreenshots 
Array of function pointer
Array of function pointer

#include <stdio.h>

int sum(int a, int b);
int subtract(int a, int b);
int mul(int a, int b);
int div(int a, int b);

int (*p[4]) (int x, int y);

int main(void)
{
  int result;
  int i, j, op;

  p[0= sum; /* address of sum() */
  p[1= subtract; /* address of subtract() */
  p[2= mul; /* address of mul() */
  p[3= div; /* address of div() */

  printf("Enter two numbers: ");
  scanf("%d %d", &i, &j);
  
  printf("0: Add, 1: Subtract, 2: Multiply, 3: Divide\n");
  do {
    printf("Enter number of operation: ");
    scanf("%d", &op);
  while(op<|| op>3);

  result = (*p[op]) (i, j);
  printf("%d", result);

  return 0;
}

int sum(int a, int b)
{
  return a + b;
}

int subtract(int a, int b)
{
  return a - b;
}

int mul(int a, int b)
{
  return a * b;
}

int div(int a, int b)
{
  if(b
      return a / b;
  else 
      return 0;
}


           
       
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