why if statement is going wrong < act as > and > act as <?

Question

#include <iostream>
#include <string>
using namespace std;
main(){
string a="hello";
string b="everyone";
if(a>b){
cout<<a;}
}

Answer 1

first of all add int main()
and return 0; at the end

second thing, don't compare strings using relational operators because it compares the letters, if the letter of first string has greater ascii code it will be termed as greater.
you can use a string function as
a.compare(b)

and if you want to compare the length
if(a.length()>b.lengtg()){
cout<<a;
}
else{
cout<<b;
}