L1-037. A除以B

printf输出格式控制


#include <iostream>
#include <string.h>
#include <vector>
#include <stdio.h>
using namespace std;


int main()
{
    double a, b;
    cin >> a >> b;
    cout << a;
    printf("/");
    if(b==0)
    {
        cout << "0=Error";
        return 0;
    }

    if(b<0)
    {
        cout << "(" << b << ")";
        //printf("(%0.0f)", b);
    }
    else
    {
        //printf("%0.0f", b);
        cout << b;
    }
    double c = a / b;
    printf("=%0.2lf", c);
    return 0;
}