strrpt.c

来自「Many C samples. It is a good sample for 」· C语言 代码 · 共 28 行

/*  File   : strrpt.c
    Author : Richard A. O'Keefe.
    Updated: 20 April 1984
    Defines: strrpt()

    strrpt(dst, src, k) "RePeaTs" the string src into dst k times.  E.g.
    strrpt(dst, "hack ", 2) will move "hack hack" to dst.  If k <= 0 it
    does nothing.  The result is the number of characters moved, except
    for the closing NUL.  src may be "" but may not of course be NullS.
*/

#include "strings.h"

int strrpt(dst, src, k)
    register char *dst;
    char *src;
    int k;
    {
	char *save;

	for (save = dst; --k >= 0; --dst) {
	    register char *p;
	    for (p = src; *dst++ = *p++; ) ;
	}
	return dst-save;
    }