#include <stdio.h>

 

int MyAdd(int x, int y)
{
return x + y;
}
int MySub(int x, int y)
{
return x - y;
}
int MyMul(int x, int y)
{
return x * y;
}
int MyDiv(int x, int y)
{
return x / y;
}
int main()
{

printf("请输入两个数： ");
int x = 0;
int y = 0;
scanf_s("%d %d", &x, &y);
char op = 'x';
printf("\n 请选择一个操作符<+-*/>:\n");
//这里%c前面加空格是为了处理上一步输入时，在键入两个数之后键入的回车键，若不加，则op就为回车键
scanf_s(" %c", &op);
if ('+' == op)
{
printf("%d + %d = %d\n", x, y, MyAdd(x, y));
}
else if ('-' == op)
{
printf("%d - %d = %d\n", x, y, MySub(x, y));
}
else if ('*' == op)
{
printf("%d * %d = %d\n", x, y, MyMul(x, y));
}
else if ('/' == op)
{
if (y != 0)
{
printf("%d / %d = %d\n", x, y, MyDiv(x, y));
}
else
{
printf("除数不能为零！！\n");
}
}
else {
printf("输入有误！！\n");
}

 

return 0;
}