字符串中提取800x600格式化的分辨率数字字符串

#include
#include
#include
#include

void str2pixel(void *string, char delim, void *width, void *height)
{
    char *path=strdup(string);
    char *pname;
    char *pt,*pp,*pf;

    pname = rindex(path, '/');

    if (pname == NULL)
        pname = path;
    else ++pname;

    pt = strchr(pname, delim);

    if (pt) {
        *pt = 0;

        pp = pt - 1;
        while (isdigit(pp[-1])) --pp;
        pf = pt + 1;
        while (isdigit(pf[0])) ++pf;
        *pf = 0;
        pf = pt + 1;

        if (!(pp && pf)) {
            pp = pf = "";
        }
    } else {
        pp = pf = "";
    }
   
    if (width) strcpy(width, pp);
    if (height) strcpy(height, pf);

    free(path);
}

int main(void)
{
    char *path="/vobs/123/abc_800x600slasd.bmp";
    char width[64];
    char height[64];

    str2pixel(path, 'x', width, height);

    printf("0x%02x - %s\n", width[0], width);
    printf("0x%02x - %s\n", height[0], height);
}