int CreateDir(const char *sPathName) 
{ 
    char DirName[256]; 
    strcpy(DirName, sPathName); 
    int i,len = strlen(DirName); 
    if(DirName[len-1]!='/') 
        strcat(DirName, "/"); 

    len = strlen(DirName); 

    for(i=1; i<len; i++) 
    { 
        if(DirName[i]=='/') 
        { 
            DirName[i] = 0; 
            if( access(DirName, NULL)!=0 ) 
            { 
                if(mkdir(DirName, 0755)==-1) 
                { 
                    perror("mkdir error"); 
                    return -1; 
                } 
            } 
            DirName[i] = '/'; 
        } 
    } 

    return 0; 
}

------解决方案--------------------

貌似没有现成的函数，需要自行编写