converting keystrokes into ascii equivalent in c

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C

hey,
I am working on an application where I would like to perform some actions on various keystrokes,from my understanding,this is possible by finding out the ascii code of the key pressed.
so Is there any funtion in "c" to determine the ascii code of the key pressed...
I came across certain functions like "getch","getche" and "getchar"but none of them seem to serve my purpose...

const int size=50;
     char name[size];//any character array
     unsigned int char
     for(int i=0;i<size;i++)
 {
     ch=getch();
      scanf("%s",Name[i]);
      if(ch==33)//ascii code of "Esc"
      {
          Name[i]='\0';
      }

     break;
 }