[Solved] Getting a word or sub string from main string when char ‘\’ from RHS is found and then erase rest

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To erase the part of a string, you have to find where is that part begins and ends. Finding somethig inside an std::string is very easy because the class have six buit-in methods for this (std::string::find_first_of, std::string::find_last_of, etc.). Here is a small example of how your problem can be solved:

#include <iostream>
#include <string>

int main() {
    std::string input { " \\PATH\\MYFILES This is my sting " };
    auto pos = input.find_last_of('\\');    

    if(pos != std::string::npos) {
        input.erase(0, pos + 1);

        pos = input.find_first_of(' ');
        if(pos != std::string::npos)
            input.erase(pos);
    }

    std::cout << input << std::endl;
}

Note: watch out for escape sequences, a single backslash is written as "\\" inside a string literal.

solved Getting a word or sub string from main string when char ‘\’ from RHS is found and then erase rest