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         Displaying  Source Code(s)   
  
        
 
         
        
          
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                Piano 
                 
                -------------------------------------------------------------------------------- 
                 
                Description : On pressing the keys many type tunes will be 
                produced. 
                 
                // PIANO saves output in c:piano.txt 
                 
                 
                 
                #include<conio.h> 
                #include<dos.h> 
                #include<fstream.h> 
                 
                void jain(int a) 
                { 
                sound((a*8)/2); 
                delay(300); 
                nosound(); 
                } 
                 
                void main(int argc,char *argv[]) 
                { 
                char anuj; 
                fstream file1; 
                file1.open(argv[1],ios::out); 
                clrscr(); 
                cout<<"PIANO "<<" 
                 
                 
                Press `q' to exit.<BR>; 
                while(anuj!='q') 
                { 
                jain(anuj); 
                anuj=getch(); 
                if(anuj!='q') 
                file1.put(anuj); 
                } 
                file1.close(); 
                } 
                 
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