/*
   testpointer4.cpp
   CIS 150
   David Klick
   6/28/05
   
   Using pointers to work with strings.
*/

#include <iostream>
using std::cout;

void upper1(char* str);
char* upper2(char* str);

int main(void) {
   char line1[] = "All the King's horses";
   char line2[] = "and all the King's men";

   cout << line1 << '\n';
   cout << line2 << '\n';
      
   // make the strings uppercase and display them
   upper1(line1);
   cout << line1 << '\n';
   cout << upper2(line2) << '\n';
  
   return 0;
}

void upper1(char* str) {
   upper2(str);
}

char* upper2(char* str) {
   char *p = str;
   while (*p != '\0') {
      if (*p >= 'a' && *p <= 'z') {
         *p = *p + ('A' - 'a');
      }
      p++;
   }
   return str;
}