简易计算器

#include <stdio.h>
#include <stdlib.h>
int Add(int x, int y){
	return x + y;
}
int Sub(int x, int y){
	return x - y;
}
int Mul(int x, int y){
	return x * y;
}
int Div(int x, int y){
	return x / y;
}
int Res(int x, int y){
	return x % y;
}

void calc(){
	char  i;
	scanf("%c", &i); 
	int x, y;
	scanf("%d", &x);
	scanf("%d", &y);
	switch (i) {
	case'+':printf("进行的加法运算结果是：%d\n", Add(x, y)); break;
	case'-':printf("进行的减法运算结果是：%d\n", Sub(x, y)); break;
	case'*':printf("进行的乘法运算结果是：%d\n", Mul(x, y)); break;
	case'/':printf("进行的除法运算结果是：%d\n", Div(x, y)); break;
	case'%':printf("进行的取余运算结果是：%d\n", Res(x, y)); break;
	}
	getchar();
}

int main(){
	while (1){
		calc();
	  }
	return 0;
}