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C/C++ Source or Header  |  1987-06-14  |  287 b   |  18 lines
  1. #include <d:\usr\stdlib\stdio.h>
  2.  
  3. char *strupr(string)
  4. register char *string;
  5. /*
  6.  *    Convert all alphabetic characters in <string> to upper case.
  7.  */
  8. {
  9.     register char *p = string;
  10.  
  11.     while(*string) {
  12.         if(islower(*string))
  13.             *string ^= 0x20;
  14.         ++string;
  15.     }
  16.     return(p);
  17. }
  18.