ex07_21.c

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

/* ex07_21.c */
/* What does this program do? */
#include <stdio.h>

void mystery1( char *s1, const char *s2 ); /* prototype */

int main( void )
{
   char string1[ 80 ]; /* create char array */
   char string2[ 80 ]; /* create char array */

   printf( "Enter two strings: " );
   scanf( "%s%s" , string1, string2 );

   mystery1( string1, string2 );

   printf("%s", string1 );

   return 0; /* indicates successful termination */

} /* end main */

/* What does this function do? */
void mystery1( char *s1, const char *s2 )
{
   while ( *s1 != '\0' ) {
      s1++;
   } /* end while */

   for ( ; *s1 = *s2; s1++, s2++ ) {
      ;   /* empty statement */
   } /* end for */

} /* end function mystery1 */



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