strspn.c

来自「mips架构的bootloader,99左右的版本 但源代码现在没人更新了」· C语言 代码 · 共 26 行

/*************************************************************
 * File: lib/strspn.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970304	Start of revision history
 */


/* return length of initial segment of p that consists entirely of
characters from s */

strspn(p,s)
char *p,*s;
{
int i,j;

for (i=0;p[i];i++) {
	for (j=0;s[j];j++) {
		if (s[j] == p[i]) break;
		}
	if (!s[j]) break;
	}
return(i);
}