c语言去字符串 首尾空格

提取p所指内存空间 数据 前后空格
int trimSpaceStr03( char *p, char *buf2)
{
int ret = 0;


int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;


while (isspace(p[i]) && p[i] != '\0')
{
i++;
}


while (isspace(p[j]) && j>0 )
{
j--;
}


ncount = j - i + 1;
//
strncpy(buf2, p+i, ncount);
buf2[ncount] = '\0';
return ret;
}