fig08_21.cpp

是有关C++编程原理教程的例子程序,全,应该对大家有所帮助

// Fig. 8.21: fig08_21.cpp
// Copying a string using array notation and pointer notation.
#include <iostream>
using std::cout;
using std::endl;

void copy1( char *, const char * ); // prototype
void copy2( char *, const char * ); // prototype

int main()
{
   char string1[ 10 ];
   char *string2 = "Hello";
   char string3[ 10 ];
   char string4[] = "Good Bye";

   copy1( string1, string2 ); // copy string2 into string1
   cout << "string1 = " << string1 << endl;

   copy2( string3, string4 ); // copy string4 into string3
   cout << "string3 = " << string3 << endl;
   return 0; // indicates successful termination
} // end main

// copy s2 to s1 using array notation
void copy1( char * s1, const char * s2 )
{
   // copying occurs in the for header
   for ( int i = 0; ( s1[ i ] = s2[ i ] ) != '\0'; i++ )
      ; // do nothing in body
} // end function copy1

// copy s2 to s1 using pointer notation
void copy2( char *s1, const char *s2 )
{
   // copying occurs in the for header
   for ( ; ( *s1 = *s2 ) != '\0'; s1++, s2++ )
      ; // do nothing in body
} // end function copy2

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