Instruction Write a C program that prompts the user to desig
Solution
 // Include the standard input/output header file and declare all constants
 #include<stdio.h>
 #include<string.h>
 #include<windows.h>
 #define FILENAME \"music.txt\"
 #define N 50
 
 int main(void)
 {
     int k=0, length, speed[N];
     // Frequency of notes
     double A=440.00, B=493.88, C=523.25, D=587.33, E=659.26, F=698.46, G=783.99;
     double a=466.16, c=554.37, d=622.25, f=739.99, g=830.61;
     HANDLE hConsole;
     char *myString;
     FILE *music;
 
      
     hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
     printf(\"The program will play music in one octive from A to G.\ To play a\"
         \" note use the upper case letter. For a sharp use the lower case\"
         \" letter. If you would like a small break use the \'space\'.\ You must \"
         \"create the entire song in a txt file called \'music.txt\'\ \");
      
     music = fopen(\"music.txt\", \"r\");
      
     // Checking to make sure the file is there
     if(music==NULL)
         printf(\"file not found\ \");
          
     else
     {
         
         // Scanning the file for the music notes and length of note
         while(fscanf(music, \"%c%d\ \", &myString[k], &speed[k])==2)
         {
             printf(\"%c    %i\ \", myString[k], speed[k]);
             k++;
          }
         // Checking length of string   
         length = strlen(myString);
          
         // Setting the length of each note into miliseconds
         for(k=0;k<length;k++)
          {
             if(speed[k]==1)
                  speed[k]=100;
              if(speed[k]==2)
                  speed[k]=200;
              if(speed[k]==3)
                  speed[k]=300;
              if(speed[k]==4)
                  speed[k]=400;
          }
          
         // Playing the music
         for(k=0;k<length;k++)
          {
             if(myString[k]==\'a\')
                  Beep(a,speed[k]);
              if(myString[k]==\'c\')
                  Beep(c,speed[k]);
              if(myString[k]==\'d\')
                  Beep(d,speed[k]);
              if(myString[k]==\'f\')
                  Beep(f,speed[k]);
              if(myString[k]==\'g\')
                  Beep(g,speed[k]);
              if(myString[k]==\'A\')
                  Beep(A,speed[k]);
              if(myString[k]==\'B\')
                  Beep(B,speed[k]);
              if(myString[k]==\'C\')
                  Beep(C,speed[k]);
              if(myString[k]==\'D\')
                  Beep(D,speed[k]);
              if(myString[k]==\'E\')
                  Beep(E,speed[k]);
              if(myString[k]==\'F\')
                  Beep(F,speed[k]);
              if(myString[k]==\'G\')
                  Beep(G,speed[k]);
              if(myString[k]==\' \')
                 sleep(speed[k]);
          }
     // Closing the open file
     fclose(music);
     }
      
     system(\"pause\");
     return (0);
 }


