If statement

It takes an expression in parenthesis and a statement or block of statements. If the expression is true then the statement or block of statements gets executed otherwise these statements are skipped.

If …else statement

An if statement can be followed by an optional else statement, which executes when the expression is false.

If…else if …else statement

The if statement can be followed by an optional else if…else statement, which is very useful to test various conditions using single if…else if statement.

switch case statement

Similar to the if statements, switch…case controls the flow of programs by allowing the programmers to specify different codes that should be executed in various conditions.

Conditional Operator ? :

The conditional operator ? : is the only ternary operator in C.