#include <iostream>
#include <windows.h>
using namespace std;
//twinkle twinkle
//CC GG AA G
//FF EE DD C
//GG FF EE D
//GG FF EE D
//CC GG AA G
//FF EE DD C
void playnote (char g, float l)
{
    char n = g;
    if (n == 'A'||'a'){
        Beep(2750,l*1000);
        cout <<n;
    }
    else if(n == 'B'||'b'){
        Beep(3087,l*1000);
        cout << n;
    }
    else if(n == 'C'||'c'){
        Beep(1637,l*1000);
        cout << n;
    }
    else if(n == 'D'||'d'){
        Beep(1835,l*1000);
        cout << n;
    }
    else if(n == 'E'||'e'){
        Beep(2060,l*1000);
        cout << n;
    }
    else if(n == 'F'||'f'){
        Beep(2183,l*1000);
        cout << n;
    }
    else if(n == 'G'||'g'){
        Beep(2450,l*1000);
        cout << n;
    }
}

int main() {
    playnote('C', 0.4);
    playnote('C', 0.4);
    playnote('G', 0.4);
    playnote('G', 0.4);
    playnote('A', 0.4);
    playnote('A', 0.4);
    playnote('G', 0.4);
    Sleep(400);
    cout<<endl;
    playnote('F', 0.4);
    playnote('F', 0.4);
    playnote('E', 0.4);
    playnote('E', 0.4);
    playnote('D', 0.4);
    playnote('D', 0.4);
    playnote('C', 0.4);
    Sleep(400);
    cout<<endl;
    playnote('G', 0.4);
    playnote('G', 0.4);
    playnote('F', 0.4);
    playnote('F', 0.4);
    playnote('E', 0.4);
    playnote('D', 0.4);
    playnote('G', 0.4);
    Sleep(400);
    cout<<endl;
    playnote('G', 0.4);
    playnote('F', 0.4);
    playnote('F', 0.4);
    playnote('E', 0.4);
    playnote('D', 0.4);
    playnote('C', 0.4);
    playnote('C', 0.4);
    Sleep(400);
    cout<<endl;
    playnote('G', 0.4);
    playnote('G', 0.4);
    playnote('A', 0.4);
    playnote('A', 0.4);
    playnote('G', 0.4);
    playnote('F', 0.4);
    playnote('F', 0.4);
    Sleep(400);
    cout<<endl;
    playnote('E', 0.4);
    playnote('E', 0.4);
    playnote('D', 0.4);
    playnote('D', 0.4);
    playnote('C', 0.4);
    cout<<endl;
return 0;

}