// toupper example 
// source: http://www.cplusplus.com/

#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>

int main()
{
  int i=0;
  char str[]="Dartmouth Computer Science cs50.\n";
  char c;
  while (str[i])
    {
      c=str[i];
      putchar (toupper(c));
      i++;
    }
  return EXIT_SUCCESS;
}