functionPtr

gistfile1.txt

#include <stdio.h>
#include <stdlib.h>

//function pointer
typedef int (*MathMethod)(int, int);                                            
 
int Mul(int a, int b) { return a*b; }
float Divide(int a, int b) { return a/b; }
int Minus(int a, int b) { return a-b; }
int Add(int a, int b) { return a+b; } 



int *Calc(int x, int y, MathMethod Opt){
     return Opt(x, y); 
} 
 
int main()
{
    int a = 6, b = 4;
    printf("a x b = %d\n", Calc(a, b, Mul)); 
    printf("a / b = %d\n", Calc(a, b, Divide));
    printf("a + b = %d\n", Calc(a, b, Minus));
    printf("a - b = %d\n", Calc(a, b, Add));
}