C + + with Freopen simple redirection, no longer afraid of debug ~

#define DEBUG  //Remove this sentence, redirect partially failed #include<iostream> #include <cstdio>using namespace Std;int main () {    #ifdef Debug    freopen ("D:\\in.txt", "R", stdin);//input freopen from In.txt file    ("CON", "R", stdin);   Read from console    freopen ("D:\\out.txt", "w", stdout);//output to OUT.txt file    freopen ("CON", "w", stdout);//output from console    # endif        int A;    cin>>a;    cout<<a<<endl;    Fclose (stdin);    Fclose (stdout);//close file    return 0;}

　　

C + + with Freopen simple redirection, no longer afraid of debug ~