airTEL song in C LANGUAGE

#include<stdio.h>
#include<graphics.h>
#include<dos.h>
float main(void)
{
float A,Bb,D,G,F;
A = 440;
G = 780;
Bb = 461;
D = 586;
F = 687;
sound(G);
delay(500);
nosound();
sound(G);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(G);
delay(500);
nosound();
sound(2*D);
delay(500);
nosound();
sound(2*A);
delay(250);
nosound();
sound(2*Bb);
delay(250);
nosound();
sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(500);
nosound();
sound(2*A);
delay(500);
nosound();
sound(G);
delay(250);
nosound();
sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(250);
sound(G);
delay(250);
sound(2*A);
delay(250);
sound(2*Bb);
delay(500);
sound(2*A);
delay(500);
sound(G);
delay(250);
sound(F);
delay(250);
sound(D);
delay(500);
nosound();

sound(G);
delay(500);
nosound();
sound(G);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(G);
delay(500);
nosound();
sound(2*D);
delay(500);
nosound();
sound(2*A);
delay(250);
nosound();
sound(2*Bb);
delay(250);
nosound();
sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(500);
nosound();
sound(2*A);
delay(500);
nosound();
sound(G);
delay(250);
nosound();
sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(250);
sound(G);
delay(250);
sound(2*A);
delay(250);
sound(2*Bb);
delay(500);
sound(2*A);
delay(500);
sound(G);
delay(250);
sound(F);
delay(250);
sound(D);
delay(500);
nosound();

sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(250);
sound(G);
delay(250);
sound(2*A);
delay(250);
sound(2*Bb);
delay(500);
sound(2*A);
delay(500);
sound(G);
delay(250);
sound(F);
delay(250);
sound(D);
delay(500);
nosound();

sound(2*A);
delay(250);
nosound();
sound(G);
delay(250);
nosound();
sound(F);
delay(250);
sound(G);
delay(250);
sound(2*A);
delay(250);
sound(2*Bb);
delay(500);
sound(2*A);
delay(500);
sound(G);
delay(250);
sound(F);
delay(250);
sound(D);
delay(500);
nosound();
return 0;
}