题解 | #简单计算器#

#include <stdio.h>

int main() {
    double a, b;
    char c;
    double result=0.0f;
    scanf("%lf%c%lf", &a,&c,&b);
    if(c=='+')
    {
        result=a+b;
    }
    else if(c=='-')
    {
        result=a-b;
    }
    else if(c=='*')
    {
        result=a*b;
    }
    else if(c=='/')
    {
        if(b==0.0)
        {
            printf("Wrong!Division by zero!");
            return 0;
        }
        else
        result=a/b;
    }
    else 
    {
        printf("Invalid operation!");
        return 0;
    }
     printf("%.4f%c%.4f=%.4f",a,c,b,result);
    return 0;
}