CPP. Error: Invalid operands to binary expression "=="

bool isSomething(string val, string lst) {
for(auto c = 0; c < lst.size(); c++) {
        if(val == c) {
            return true;
        }
    }

    return false;
};

Code produces the following error:

error: invalid operands to binary expression ('std::__ndk1::string' (aka 'basic_string<char, char_traits<char>, allocator<char> >') and 'int')

        if(val == c) {

           ~~~ ^  ~

I tried to change the return type, it didn’t help, I’m rewriting the code, and I don’t know.
I think we should overload the == operator, but I’m not sure if it’s possible, and I don’t quite know how to do it.

>Solution :

try this:

if(stoi(val) == c)

It seems that you’re trying to compare string and an integer