In Windows, enable the Console

# Pragma once Template <int K> Class _ int2type {Enum {_ A = k };};   Template <bool E1, bool E2> class _ enable { Public: Static void enable () { ES (_ int2type <E1> ()); EI (_ int2type <E2> ()); } PRIVATE: Static void EI (_ int2type <true>) { Static STD: ofstream conout ("con "); Static STD: ifstream conin ("con "); If (conout. is_open ()) STD: cout. rdbuf (conout. rdbuf ()); If (conin. is_open ()) STD: cin. rdbuf (conin. rdbuf ()); } Static void EI (_ int2type <false> ){} Static void ES (_ int2type <false> ){} Static void ES (_ int2type <true>) { File * PF; If (pF = fopen ("con", "RT ")) _ Iob [0] = * PF; If (pF = fopen ("con", "WT ")) _ Iob [2] = _ iob [1] = * PF; } }; Template <bool _ enablestdio, bool _ enableiostream> Void openconsole () { Static bool first = true; If (first) { First = false; If (allocconsole ()) { _ Enable <_ enablestdio, _ enableiostream >:: enable (); } } }

 

Usage:

Openconsole <true, true> ();

Then you can use Cin, cout, printf, and scanf to input and output the console.