C++ programme semblable a cmd.exe de Windows

#include <iostream>
#include <windows.h>

using namespace std;


char inst[50];
bool pexit=false;

int main()
{
    char inst[50];
    bool pexit=false;

    while(!pexit)
    {

        cout << ".../$USR/$Dir/LAB.EXE:>";
        cin >> inst;

        if(inst=="exit")
        {
            pexit=true;
            break;
        }
        else if(inst=="help")
        {
            cout << "Note:commands are case sensitive! \n help: Gives this \n exit: shut down the program \n info: gives information about the program."<< endl;
            cout << "texit: shutsdown the program after an amount of time \n wexit: Shuts down windowa "<<endl;
            break;
        }
        else if(inst=="info")
        {
            cout << " Written by Gabriel Arsenault in C++." <<endl;
            break;
        }
        else if(inst=="wexit")
        {
            cout << "Windows will shutdown 5 seconds after you receive a confirmation" <<endl;
            system("Shutdown.exe -r -m @IP -t 5 -c \"Command confirmed...\"");
            break;
        }
        else if(inst=="EntertheSandman")
        {
            cout << "Eeeexiiiit liiight... :P" << endl;
            pexit=true;
            cout << "Variable \" exit \" has been changed to true" <<endl;
            Sleep(750);
            cout << "Bye" <<endl;
            break;
        }

        else if(inst=="revealyoursecret")
        {
            cout << " I swear my intentions are evil... \n Made by Gabriel Arsenault for devil 122 in association with joe prank 2333" << endl;
            break;
        }

        else if(inst=="texit")
        {
            char time;
            time=0;
            cin >> time;
            Sleep(time);
            pexit=true;
            break;
        }
        else
        {
            cout << " Instruction incorrect." <<endl;
        }
    }
    return 0;
}

if(nomdestring=="Bou!")
{
     cout << "Ah!!" <<endl;
}