public static void Main()
DeleteLastNumber("1234"); public static void DeleteLastNumber(string input)
Console.WriteLine(input);
string inputMinus1 = input;
int currrentInputLength = input.Length;
for (int i = 0; i < input.Length; i++)
inputMinus1 = inputMinus1.Remove(currrentInputLength - 1, 1);
Console.WriteLine(inputMinus1);
currrentInputLength = currrentInputLength - 1;
