Question

有理数的四则运算(C语言)

Answer 1

#include<stdio.h>
#include<math.h>
void main()
{
float a,b;
char C;
while(1)
{
scanf("%f%c%f",&a,&C,&b);
if((C!='+')&&(C!='-')&&(C!='*')&&(C!='/'))
break;
switch(C)
{
case '+': printf("%f+%f=%f",a,b,a+b);
break;
case '-': printf("%f-%f=%f",a,b,a-b);
break;
case '*': printf("%f*%f=%f",a,b,a*b);
break;
case '/': printf("%f/%f=%f",a,b,a/b);
break;
}
}
}