Do-While Loop in Functions - c++

Question

I am just studying so don't judge me hard please.
I have a problem. I know how to do a do-while loop. But today I have learned about functions. So I made do-while loops in functions and they are looping infinitely. How do I stop the loops?
#include <iostream>
using namespace std;
void text()
{
cout << "Log in to see the Menu. " << endl;
}
void lg()
{
const string login = "el1oz";
string input;
cout << "Login > " << flush;
cin >> input;
do{
if(login == input){
break;
}
else{
cout << "Try again." << endl;
}
}while(true);
cout << "Correct Login! " << endl;
}
void pw()
{
const string password = "Mau01171995";
string input1;
cout << "Password > " << flush;
cin >> input1;
do{
if(password == input1){
break;
}
else{
cout << "Try again. " << endl;
}
}while(true);
cout << "Correct Passsword! " << endl;
}
int main()
{
text();
lg();
pw();
return 0;
}

Answer 1

You're not changing input after the code enters in the loop. You should put the cin >> input inside the loop.
Also consider when to use a while loop vs a do while loop. In this case a while loop is better.
You probably should not use using namespace std; (More information here).
You should use more descriptive names.
#include <iostream>
using std::cin;
using std::string;
using std::cout;
using std::flush;
using std::endl;
void printWelcome()
{
cout << "Log in to see the Menu. " << endl;
}
void inputUser()
{
const string login = "el1oz";
string input;
cout << "Login > " << flush;
while(cin >> input){
if(login == input){
break;
}
else{
cout << "Try again." << endl;
}
}
cout << "Correct Login! " << endl;
}
void inputPassword()
{
const string password = "Mau01171995";
string input;
cout << "Password > " << flush;
while(cin >> input){
if(password == input){
break;
}
else{
cout << "Try again. " << endl;
}
}
cout << "Correct Passsword! " << endl;
}
int main()
{
printWelcome();
inputUser();
inputPpassword();
return 0;
}