#include <stdio.h>
int main()
{
float num1, num2;
char op;
printf("输入两个数:\n");
scanf_s("%f %f", &num1, &num2);
printf("输入运算符\n");
scanf_s("%c", &op);
switch (op)
{
case '+':
printf("%.2f+%.2f=%.2f", num1, num2, num1 + num2);
break;
case '-':
printf("%.2f-%.2f=%.2f", num1, num2, num1 - num2);
break;
case '*':
printf("%.2f*%.2f=%.2f", num1, num2, num1*num2);
break;
case '/':
printf("%.2f/%.2f=%.2f", num1, num2, num1 / num2);
break;
default:
printf("错误");
break;
}
return 0;
}
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