When we want to add 5 numbers which are entered by the user then why we use the variable num

Question

please

Answer 1

You can use any variable name

Answer 2

double input,num;
for(int x =0;x<5;x++){
cin >> input;
num = num + input;
}
cout<<num;

num could be anything...

This is needed to temporarily store addition of all the numbers , one by one ,via a loop, in a variable Hope that makes sense.