c++ program to check entered number by user

I am new to programming, started with C++ quite recently and I use CLion IDE.

I need to solve something, but I am not sure how exactly and I need your help with a basic C++ console program.

if the user enters a ten-digit number and the fifth number is one, the output should be this word – "zadochno".

if the user enters a ten-digit number and the fifth number is two, the output should be this word – "redovno".

The user is expected to enter 2101162235 or similar.
In any case, the fifth element should be either 1 or 2.

Examples:

Option 1: input> 2101162235 -> output string "zadochno"

Option 2: input> 2101262235 -> output string "redovno"

I am able to only partially create the program:

#include<iostream>

int number;
cout << "Please, enter number: ";
cin > number;

//I believe there should be an if statement or for loop here:
if(){

}

Can you please help me?

>Solution :

You can take the input from the user as std::string and then check if the element at index 4 is 1 or 2 as shown below:

#include <iostream>
#include <string>
int main()
{
    std::string input;
    
    //take input from user 
    std::getline(std::cin, input);
    
    //check if the 5th letter(at index 4 since indexing starts with 0) is '1' or '2'
    if(input.at(4) == '1')
    {
        std::cout<< "zadochno"<<std::endl;
    }
    else if(input.at(4) == '2')
    {
        std::cout << "redovno"<<std::endl;
    }
    
    //this below shown for loop is optional. If you're sure that the user input contains only digits then you can skip/remove this for loop.
    for(int i = 0; i < input.size(); ++i)
    {
        //check if the all the characters are digits of a number 
        if(std::isdigit(input[i]))
        {
            ;//std::cout<<"yes digit";
        }
        else
        {
            std::cout<<"Please enter a valid number"<<std::endl;
        }
    }
    
    return 0;
}

The output of the above program can be seen here.