文章标题

***计算器程序代码***

#include <stdio.h>
void main()
{
float m,n;
char op;
printf("请输入表达式:");
scanf("%f %c %f",&m,&op,&n);
switch(op)
{
case'+':printf("%.2f+%.2f=%.2f\n",m,n,m+n);break;
case'-':printf("%.2f-%.2f=%.2f\n",m,n,m-n);break;
case'*':printf("%.2f*%.2f=%.2f\n",m,n,m*n);break;
case'/':if(n==0) printf("无解\n");else printf("%.2f/%.2f=%.2f\n",m,n,m/n);break;
default:printf("error\n");
}
}