Question

How do I find a substring from the string path “/user/desktop/abc/post/” using C/C++? I want to check if folder “abc” is present or not in that path.

Path is character pointer char *ptr = "/user/desktop/abc/post/";

Answer 1

In C, use the strstr() standard library function:

const char *str = "/user/desktop/abc/post/";
const int exists = strstr(str, "/abc/") != NULL;

Take care to not accidentally find a too-short substring (this is what the starting and ending slashes are for).