fig05_10.cpp

经典vc教程的例子程序

// Fig. 5.10: fig05_10.cpp
// Converting lowercase letters to uppercase letters
// using a non-constant pointer to non-constant data
#include <iostream.h>
#include <ctype.h>

void convertToUppercase( char * );

int main()
{
   char string[] = "characters and $32.98";

   cout << "The string before conversion is: " << string;
   convertToUppercase( string );
   cout << "\nThe string after conversion is:  " 
        << string << endl;
   return 0;
}

void convertToUppercase( char *sPtr )
{
   while ( *sPtr != '\0' ) {

      if ( *sPtr >= 'a' && *sPtr <= 'z' )
         *sPtr = toupper( *sPtr );  // convert to uppercase

      ++sPtr;  // move sPtr to the next character
   }
}