Question

C语言问题 简单计算器，编译没错误，但是计算不了

#include <math.h>
#include <stdio.h>
void main()
{
float data1,data2;
char op;
printf("Please enter the expression:\n");
scanf("%d%c%d",&data1,&op,&data2);
switch(op)
{
case'+':
printf("%f+%f=%f\n",data1,data2,data1+data2);
break;
case'-':
printf("%f-%f=%f\n",data1,data2,data1-data2);
break;
case'*':
case'x':
case'X':
printf("%f*%f=%f\n",data1,data2,data1*data2);
break;
case'/':
if (fabs(data2) <= 1e-7)
printf("Division by zero!\n");
else
printf("%f/%f=%f\n",data1,data2,data1/data2);
break;
default:
printf("Unknown operator! \n");
}
}
就是计算什么都是0.000000+0.000000=0.000000

Answer 1

这句改成这试试scanf("%f%c%f",&data1,&op,&data2);