Please explain this.

Question

int num = 1;
int number;
int total = 0;

while (num <= 5) {
cin >> number;
total += number;
num++;
}
cout << total << endl;

Answer 1

You can add a line between total += number and num++

cout << "iteration: " << num << ", total:" << total << endl;

Then you should see how it works.

Answer 2

when num=1:
Let's assume user enter the number value as 5
total=total+number i.e. total=0+5=5

when num=2
Let's assume user enter the number value as 6
total=total+number i.e. total=5+6=11

when num=3
Let's assume user enter the number value as 7
total=total+number i.e. total=11+7=18

when num=4
Let's assume user enter the number value as 8
total=total+number i.e. total=18+8=26

when num=5
Let's assume user enter the number value as 9
total=total+number i.e. total=26+9=35

Answer 3

Thanks a lot, Gordon 😊😊😊😊