题解 | 简单计算器
简单计算器
https://www.nowcoder.com/practice/b8f770674ba7468bb0a0efcc2aa3a239
#include <stdio.h>
int main() {
double a,b=0;
char c='0';
while(scanf("%lf%c%lf",&a,&c,&b)!=EOF)
{
if(c=='+'||c=='-'||c=='*'||c=='/')
{if(c=='+')
printf("%.4lf+%.4lf=%.4lf\n",a,b,a+b);
else if(c=='-')
printf("%.4lf-%.4lf=%.4lf\n",a,b,a-b);
else if(c=='*')
printf("%.4lf*%.4lf=%.4lf\n",a,b,a*b);
else if(c=='/')
{
if(b==0)
printf("Wrong!Division by zero!\n");
else
printf("%.4lf/%.4lf=%.4lf\n",a,b,a/b);
}
}
else
printf("Invalid operation!\n");
}
return 0;
}
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