Question

如何写一个能进行加减乘除的C语言程序？

Answer 1

#include <stdio.h>
void main(void)
{
char operation;
float a;
float b;
double result;

printf("Please input the first number:");
scanf("%f", &a);
getchar();
printf("请输入运算符:");
scanf("%c", &operation);
getchar();
printf("Please input the second number:");
scanf("%f", &b);

switch (operation)
{
case '+': result = a + b; break;
case '-': result = a - b; break;
case '*': result = a * b; break;
case '/': result = a / b; break;
default: break;
}
printf("%f %c %f = %f\n", a, operation, b, result);
}

Answer 2

楼上的基本实现了，只是比较简单的功能，没有考虑很多实际情况，如除数等于0等错误情况