计算(calc)的c++程序
时间: 2024-06-01 14:09:38 浏览: 15
#include <stdio.h>
#include <stdlib.h>
int main()
{
char operator;
double num1, num2, result;
printf("请输入运算符 (+, -, *, /): ");
scanf("%c", &operator);
printf("请输入两个数: ");
scanf("%lf %lf", &num1, &num2);
switch(operator)
{
case '+':
result = num1 + num2;
break;
case '-':
result = num1 - num2;
break;
case '*':
result = num1 * num2;
break;
case '/':
if(num2 == 0)
{
printf("除数不能为零\n");
exit(0);
}
result = num1 / num2;
break;
default:
printf("运算符错误\n");
exit(0);
}
printf("%.2lf %c %.2lf = %.2lf\n", num1, operator, num2, result);
return 0;
}