题解 | #学生基本信息输入输出#

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

int main()
{
    int i=0;
    char fenhao;
    double a=0;
    double b=0;
    double c=0;
    char douhao1,douhao2;
    cin>>i>>fenhao>>a>>douhao1>>b>>douhao2>>c;
  //输出时，四舍五入并保留两位小数是关键
    a=round(a*100)/100.0;
    b=round(b*100)/100.0;
    c=round(c*100)/100.0;
    cout<<fixed<<setprecision(2)<<"The each subject score of No. "
        <<i<<" is "<<a<<", "<<b<<", "<<c<<"."<<endl;
    return 0;
}