#include <stdio.h>

enum MathOps {PLUS, MINUS, mosd}; 

float mathfunc(int x, enum MathOps operation, int y)
    {
        switch(operation){
        case PLUS: return x + y;
                  break;
        case MINUS: return x - y;
                  break;
        //etc.
        }
    }
int main(void) 
{
	
	printf("%f",mathfunc(4,PLUS,3));
    
    
	// your code goes here
	return 0;
}