c语言写加减法计算器

#include <stdio.h>
void main()
{
int a,b;
char op;
printf("输入一个数");
scanf("%d",&a);

printf("\n输入运算符:");
scanf("%s",&op);

printf("\n输入另一个数");
scanf("%d",&b);

switch(op)
{
case '+':
printf("\n =%d\n",a+b);
break;
case '-':
printf("\n =%d\n",a-b);
break;
case '*':
printf("\n =%d\n",a*b);
break;
case '/':
printf("\n =%d\n",a/b);
break;
default:
break;

}
}本回答被提问者和网友采纳

float minus(float a, float b)
{
return (a-b);
}