The while Loop

Question

#include <iostream>
using namespace std;

int main()
{
int num = 1;
while (num < 6) {
cout << "Number: " << num << endl;
num = num + 1;
}

return 0;
}
/* Outputs
Number: 1
Number: 2
Number: 3
Number: 4
Number: 5
*/

Why it is not starting with Number: 2?
When we have below details:
int num = 1;
num = num + 1;
?

Answer 1

You incement num after printing it so the value of num before the incement will be printed

Answer 2

if you want to start from Number: 2 num need to be 2 and
cout << "Number: " << num << endl; is before num = num + 1; which means num is still 1.
just need to change num to 2.
int main()
{
int num = 2;
while (num < 6) {
cout << "Number: " << num << endl;
num = num + 1;
}

return 0;
}