C#

Question

I need to get a code where it should be of 7 numbers if it is less than 7 then it should insert 0 at the start: eg: if(i=7) 1000001 i>7 A1234 --> 00A1234 How can i get output..?

Shweta Lodha · Answer

Varsha B static void Main(string[] args) { string inputNumber = Console.ReadLine(); StringBuilder builder = new StringBuilder(); builder.Append(inputNumber); if (inputNumber.Length { string temp = string.Empty; for (int i = inputNumber.Length; i { temp = builder.ToString(); builder.Clear(); builder.Append('0'); builder.Append(temp); } } Console.WriteLine(builder.ToString()); Console.ReadLine(); }

Vulpes · Answer

If you mean that you have a hex string which you want padding with zeros to the left so that its length is 7 then you can use the String.PadLeft method: string hex1 = 1000001; string hex2 = A1234; hex1 = hex1.PadLeft(7 '0'); hex2 = hex2.PadLeft(7 '0'); Console.WriteLine(hex1); // 1000001 Console.WriteLine(hex2); // 00A1234 Alternatively if you're starting with hex numbers and want to convert them to hex strings which are 7 characters long you can use the ToString() method with the X7 format specifier: int num1 = 0x1000001; int num2 = 0xA1234; string hex1 = num1.ToString(X7); string hex2 = num2.ToString(X7); Console.WriteLine(hex1); // 1000001 Console.WriteLine(hex2); // 00A1234

Lakshmanan Sethu · Answer

Can you please be clear with your requirement?