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#include <stdio.h>
int sum(int x, int y)
{
return x + y;
}
int product(int x, int y)
{
return x * y;
}
int difference(int x, int y)
{
return x - y;
}
int main(void)
{
int a = 10;
int b = 5;
int result = 0;
int (*pfun)(int, int); /* Function pointer declaration */
pfun = sum;
result = pfun(a, b); /* Call sum() through pointer */
printf("\npfun = sum result = %d", result);
pfun = product;
result = pfun(a, b); /* Call product() through pointer */
printf("\npfun = product result = %d", result);
pfun = difference;
result = pfun(a, b); /* Call difference() through pointer */
printf("\npfun = difference result = %d\n", result);
return 0;
}
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