求纠错

LonelyFish @ 2016-12-13 20:19:57

#include<iostream>
#include<fstream>
using namespace std;
ifstream in("reverse.in");
ofstream out("reverse.out");
int main()
{
    string n;
    int l,j;
    cin>>n;
    l=n.length();
    j=l-1;
    for(int i=0;i<=l-1;i++)
    {
        if(i==0&&n[0]=='-')
        {
            cout<<"-";
            continue;    
        }    
        cout<<n[j];
        j--;
    }
    in.close();
    out.close();
    return 0;
}

by CodyQ666 @ 2017-01-18 12:00:35

#include<iostream>
#include<fstream>
using namespace std;
//ifstream in("reverse.in");//不用文件输入输出
//ofstream out("reverse.out");//不用文件输入输出
int main()
{
    string n;
    int l,j;
    cin>>n;
    l=n.length();
    j=l-1;
    for(int i=0;i<=l-1;i++)
    {
        if(i==0&&n[0]=='-')
        {
            cout<<"-";
            continue;    
        }    
        cout<<n[j];
        j--;
    }
    //in.close();//不用文件输入输出
    //out.close();//同上
    return 0;
}
/*我AC了，程序不错*/