不知道下面注释的地方理解是否正确？——请教了


        char match[256], entry[256];
        FILE *titles_fp;
        int count = 0;
        char *found, *title, *catalog;

        mvprintw(10, 0, "Enter a string to search for in CD titles: ");
        get_string(match);  //输入如：myCD1

        titles_fp = fopen(title_file, "r");  //文件中存放形式如： cd11,myCD1,liuxing ,zhoujielun
                                             //                   cd22,myCD2,gudian ,shubote
        if (titles_fp) {
                while (fgets(entry, 256, titles_fp)) {
                        catalog = entry;
                        if (found == strstr(catalog, ",")) {  
//上面是在字符串catalog中查找首次出现的 字符串“，”的位置，并返回该位置的指针
                                *found = '\0';  //这里是将原来存放‘，’的位置改为‘\0’吗？为什么这样做？
                                title = found + 1;  //则此处 title=“myCD1,liuxing ,zhoujielun”吗？

                                if (found == strstr(title, ",")) {
                                        *found = '\0';     
                                        if (found == strstr(title, match)) {
                                                count++;
                                                strcpy(current_cd, title);
                                                strcpy(current_cat, catalog);
                                        }
                                }
                        }
                }
                fclose(titles_fp);

if (found == strstr(catalog, ",")) 这什么东西呀
应该是 if( (found=strstr(catalog,",")) != NULL )
当然写成 if (found = strstr(catalog, ","))  ------这里理解了 ， 谢谢了大神。

可以请教一下，当我的char *found 定义之后，found是否已被分配了地址空间，
found无论什么时候都不会等于0，但在if中做判断的时候，为什么每次都可以成立。

if (found == strstr(catalog, ","))使用的 我的程序完全可以正确运行。