R N REDDY .Net Community

    void main()
       {
        Console.Write Line("Enter a value");
        int a = convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter b value")
        int b = convert.ToInt32(Console.ReadLine());

        if(b == 0)
        {
             Console.WriteLine("Please enter b as other than zero");
             b = Convert.ToInt32(Console.ReadLine());
        }

        int c = a/b;
        Console.WriteLine("division result is " +c)

        Console.ReadLine();
       }
Output: Enter a value
             10
   Enter b value
   0
             Please enter b as other than zero
             2
             Division result is 5

b. if else:
    Syntax: if (<Condition>)
               Statement 1;
                 else
           Statement 2;

Eg: for comparing two numbers:
    void main()
       {
        Console.Write Line("Enter i value");
        int i = convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter j value")
        int j = convert.ToInt32(Console.ReadLine());

        if(i > j)
             Console.WriteLine(" i is greater than j ");
        else
             Console.WriteLine(" j is greater than i ");

        Console.ReadLine();
       }
Output: Enter i value
    10
             Enter j value
               5
             i is greater than j

Eg:
    void main()
       {
        Console.Write Line("Enter i value");
        int i = convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter j value")
        int j = convert.ToInt32(Console.ReadLine());

        if(i > j)
             Console.WriteLine(" i is greater than j ");
             Console.WriteLIne("i value is " +i);
        else
             Console.WriteLine(" j is greater than i ");
             Console.WriteLIne("j value is " +j);
        Console.ReadLine();
       }
Output: Enter i value
              10
             Enter j value
              10
      i is greater than j
      i value is 10

if elseif: Whenever we want to check the multiple conditions then we go for "if-elseif".
    Syntax: if(<condition>)
                     statement1;
                 elseif(<condition2>)
                     statement2;
                 elseif(<condition3>)
       statement3;
                 else
                      statement4;

Eg:
    void main()
       {
        Console.Write Line("Enter i value");
        int i = convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter j value")
        int j = convert.ToInt32(Console.ReadLine());

        if(i > j)
             Console.WriteLine(" i is greater than j ");
        elseif(j > i)
             Console.WriteLine(" j is greater than i ");
        else
             Console.WriteLine(" i is equal to j ");
        Console.ReadLine();
       }
Output: Enter i value
              10
              Enter j value
              10
i is equal to j

Eg: For age related program:
    void main()
    {
         Console.WriteLine("Enter your age");
          int age = convert.ToInt32(Console.ReadLine());

          if (age >= 58)
               Console.WriteLine("You are a senior citizen");

          elseif (age >= 25)
                Console.WriteLine("You are a working citizen");

          elseif (age >= 16)
                 Console.WriteLine("You are a college student");

         elseif (age >= 4)
                Console.WriteLine("You are a school going boy");

         elseif (age >= 1)
             Console.WriteLine("You are a playing kid ");

         else
             Console.WriteLine("Invalid age");

        Console.ReadLine();
    }
Output: Enter your age
      58
      Your are a senior citizen