The if Statement : If « Statement « C# / CSharp Tutorial

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C# / CSharp Tutorial » Statement » If 
4.1.1.The if Statement

You can selectively execute part of a program through the if statement.

Its simplest form is shown here:

if(condition) 
   statement;
  1. condition is a Boolean (that is, true or false) expression.
  2. If condition is true, then the statement is executed.
  3. If condition is false, then the statement is bypassed.

The complete form of the if statement is

if(condition) 
   statement; 
else 
   statement;

The general form of the if using blocks of statements is

if(condition)
{
    statement sequence 
}
else
{
    statement sequence 
}

if-else-if ladder. It looks like this:

if(condition)
   statement; 
else if(condition)
   statement; 
else if(condition)
   statement; 
.
.
.
else
   statement;
4.1.If
4.1.1.The if Statement
4.1.2.Relational operators that can be used in a conditional expression.
4.1.3.Demonstrate the if statement
4.1.4.bool values in if statement
4.1.5.If a value is positive or negative
4.1.6.if statement with || and &&
4.1.7.Determine if a value is positive, negative, or zero
4.1.8.A nested if statement
4.1.9.Use an if statement that executes a block
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