PF

Question

Take a positive integer from the user. Keep displaying anerror message and prompting for input again and again if the user enters invalid input (negative or zero)

Senthilkumar · Answer

You can use any infinite loop. for(;;) { } or while(true) { } or do { } while() when you meet your criteria to get the positive integer then you can exit from the loop.

Vulpes · Answer

You can do something like this with code such as the following: int x; while(true) { Console.Write(Enter a positive integer : ); int.TryParse(Console.ReadLine() out x); if (x > 0) break; // or return Console.WriteLine(Invalid input try again); }