if, if-else, if-else if

If Statements

• If something is true/false, the next is done.

int marks = 77;

if (marks > 50)
{
    Console.WriteLine("PASS");
}

• If marks greater than 50, then pass. Nothing is done in any other scenario.

If-else Statements

• If true/false do one thing, otherwise do something else.

int marks = 77;

if (marks > 50)
{
    Console.WriteLine("PASS");
}
else
{
    Console.WriteLine("FAIL");
}

If-else if Statements

• Handles multiple conditional statements

int marks = 77;

if (marks > 90)
{
    Console.WriteLine("A");
}
else if (marks > 80)
{
    Console.WriteLine("B");
}
else if (marks > 50)
{
    Console.WriteLine("C");
}
else
{
    Console.WriteLine("FAIL");
}