去掉字符串中的空格

时间：2010-03-29 来源：wangchenxicool

#include <string.h>
#include <stdio.h> //----------------------------------------------------------------------------------
void *str_l_trim( char *s )
//----------------------------------------------------------------------------------
// 去掉字符串左空格
{
    int p = 0, k = 0;     if( strlen(s) == 0 )
        return 0;
    p = 0;
    while ( s[p] == ' ' || s[p] == '\t' )
    {
        p++;
    }
    if( p == 0 )
        return 0;
    while( s[k] != '\0')
    {
        s[k++] = s[p++];
    }     return 0;
} //----------------------------------------------------------------------------------
void *str_r_trim( char *s )
//----------------------------------------------------------------------------------
// 去掉字符串右空格
{
    int l = 0, p = 0;     l = strlen(s);
    if( l == 0 )
        return 0;
    p = l - 1;
    while ( s[p] == ' ' || s[p] == '\t' )
    {
        s[p--] = '\0';
        if( p < 0 )
        break;
    }     return 0;
} //----------------------------------------------------------------------------------
int main(void)
//----------------------------------------------------------------------------------
// 主函数
{
    char *str = "                                                                                                                 wangchenxicool.cublog.cn                              ";     str_l_trim(str);
    str_r_trim(str);
    printf("%s", str);     getch();
    return 0;
}

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