If/Else Statement. 6A

If/else statements are used to control the flow of a program by allowing decisions to be made about how the program should proceed based on certain conditions. They allow sections of code to execute only if certain conditions are met and can provide different paths to take depending on the outcome. They are widely used in programming to create complex and powerful decision-making capabilities.

Basic syntax of if/else if statements:

if (condition) {

// code to execute if condition is TRUE

} else if (condition) {

// code to execute if condition is TRUE

} else {

// code to execute if all other conditions are FALSE

}

The purpose of isNaN() is to check if a value is not a number. It will return true if the value is not a number, and false if the value is a number.

When using &&, conditions must both be true in order to evaluate to true. When using ||, only one of the conditions needs to be true in order to evaluate to true.

If statements are a type of conditional statement in programming that are used to determine whether a given statement is true or false. If the statement is true, then a set of instructions will be executed; however, if the statement is false, then a different set of instructions will be executed.

Else-if statements are used when you need to check multiple conditions, and they are organized in a sequence of if-else blocks. The else-if block only executes if all preceding if and else-if blocks fail.

Else statements are used as the default option when all other conditions fail.