c++ issues

Question

https://code.sololearn.com/cCbRpHEg1pWf/#cpp

Answer 1

int num =126;
int count;
cin >> count;
cout << num << count << endl;

Answer 2

Check the comments on the exercise

Answer 3

Check this post too , I explained to the guy about this practice
https://www.sololearn.com/Discuss/2924589/?ref=app

Answer 4

can you explain it more...simple. Please