去掉字符串中的空格

#include
#include

 

//----------------------------------------------------------------------------------
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;
}