/*
   File: upper.c
   Print out input string in upper case.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"
#include <ctype.h>
#include "strlib.h"

main() {
   int i, n ;
   char c ;
   string str ;

   printf("Enter a line:  ") ;
   str = GetLine() ;

   printf("In upper case: ") ;

   n = StringLength(str) ; 
   for ( i = 0 ; i < n ; i++ ) {
      c = IthChar(str, i) ;      
      printf("%c", toupper(c) ) ;
   }
   printf("\n") ;
}
----------------------------------------------------------

lassie% a.out
Enter a line:  If I were a rich man...
In upper case: IF I WERE A RICH MAN...

lassie% a.out
Enter a line:  the lazy fox jumped over the quick brown dog
In upper case: THE LAZY FOX JUMPED OVER THE QUICK BROWN DOG
lassie%