// Copying a string using array notation and pointer notation.
#include <stdio.h>
#define SIZE 10
void copy1( char * const s1, const char * const s2 ); // prototype
void copy2( char *s1, const char *s2 ); // prototype
int main( void )
{
char string1[ SIZE ]; // create array string1
char *string2 = "Hello"; // create a pointer to a string
char string3[ SIZE ]; // create array string3
char string4[] = "Good Bye"; // create a pointer to a string
copy1( string1, string2 );
printf( "string1 = %s\n", string1 );
copy2( string3, string4 );
printf( "string3 = %s\n", string3 );
} // end main
// copy s2 to s1 using array notation
void copy1( char * const s1, const char * const s2 )
{
size_t i; // counter
// loop through strings
for ( i = 0; ( s1[ i ] = s2[ i ] ) != '\0'; ++i ) {
; // do nothing in body
} // end for
} // end function copy1
// copy s2 to s1 using pointer notation
void copy2( char *s1, const char *s2 )
{
// loop through strings
for ( ; ( *s1 = *s2 ) != '\0'; ++s1, ++s2 ) {
; // do nothing in body
} // end for
} // end function copy2
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