strcmps.c

来自「Microsoft MS-DOS6.0 完整源代码」· C语言 代码 · 共 47 行

/* strcmps - compare strings and ignore spaces */

#include <ctype.h>
#include "..\h\tools.h"

/* compare two strings, ignoring white space, case is significant, return
 * 0 if identical, <>0 otherwise
 */
strcmps (p1, p2)
register const char *p1, *p2;
{
    while (TRUE) {
	while (isspace (*p1))
	    p1++;
	while (isspace (*p2))
	    p2++;
	if (*p1 == *p2)
	    if (*p1++ == 0)
		return 0;
	    else
		p2++;
	else
	    return *p1-*p2;
	}
}

/* compare two strings, ignoring white space, case is not significant, return
 * 0 if identical, <>0 otherwise
 */
strcmpis (p1, p2)
register const char *p1, *p2;
{
    while (TRUE) {
	while (isspace (*p1))
	    p1++;
	while (isspace (*p2))
	    p2++;
	if (toupper (*p1) == toupper (*p2))
	    if (*p1++ == 0)
		return 0;
	    else
		p2++;
	else
	    return *p1-*p2;
	}
}