Define the If - else statement - computer programming?

The If - else statement

The universal form of if - else statement is

                        if(expression)

                        {

                                    statements 1;

                        }

                        else

                        {

                                    statements 2;

                        }

If  the 'expression' returns a true, then it will execute statements 1 otherwise if it returns false, then it will execute statements 2. The statements are able to be simple or compound statements.

Flowchart of if - else statement

For instance

                        if(x>10)

                        {         

                                    x=x+1;

                        }

                        else

                        {

                                    x=x-1;

                        }

If the value of x is greater than 10, it will execute x=x+1. I the value of x is less than 10, then it will execute x=x-1.