Abbreviation Checker [BJIT]

#include<bits/stdc++.h>
using namespace std;

bool the_checker(string a, string b)
{
    string s = "";
    bool flag = false;
    for(int i = 0; i < a.size(); i++)
    {
        if(!i || a[i - 1] == ' ') s += a[i];
    }
    if(s == b) return true;
    else return false;
}

int main()
{
    string a = "Aksajdn Bnas Jsandb Isjdb Tnasbd", b = "BJIT";
    cout << the_checker(a, b);
}