Why num++ postfix is used in while loop

Question

in this code after console writeline num++ postfix is used without it compiler gives unlimited 1s and with prefix ++num same 1 to 5
can any describe this why it is used
int num= 1;
while(num < 6)
{
Console.WriteLine(num);
num++;
}
/* Outputs
1
2
3
4
5
*/

Answer 1

Hi Shahzaib Jahangir

++ is an increment of one

This is a shortcut of writing:

VariableName = VaraiableName + 1

This means that it adds 1 to a number.

Your example:

In the example num starts at 1

It is less that 6 so the first output is 1

Then num++ same as ‘num + 1’

The value of num is now 2

This is then repeated until the
value of num is not less than 6

Answer 2

num++ is used to increase value of num. With increasing, num gets to 6, so condition becomes false and while loop stops.

If num++ was not defined:
1) num would always be 1,
2) num < 6 would be true, so while loop would become infinite.

Answer 3

when the only command in the line is an increment, it is irrelevant whether you use prefix or postfix. the difference is visible in other scenarios however

Answer 4

("num") string