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C# Basics

Basic Coding PracticeBasic Coding Practice

A number is stored in a variable called num in the form of a string. Add 2 to the stored number. You may use the following steps:

  • Convert the value of num string to an integer and store it in a new integer variable called temp.
  • Add 2 to the value of temp.
  • Convert the value of temp to a string and assign it to the variable num


1. Use Convert.ToInt32() and Convert.ToString().

using System;

namespace ConsoleApp
    internal class Program
        static void Main(string[] args)
            string num = "15";

            // Write code below this line
            int temp = Convert.ToInt32(num);
            temp = temp + 2;
            num = Convert.ToString(temp);
            // Write code above this line

            Console.WriteLine(num); // Expected Output: 17

Everything was clear?

Section 2. Chapter 14