fig05_21.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 37 行

// Fig. 5.21: fig05_21.cpp
// Copying a string using array notation
// and pointer notation.
#include <iostream.h>

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

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

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

   copy2( string3, string4 );
   cout << "string3 = " << string3 << endl;

   return 0;
}

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

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