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The general form of the for statement can be expressed as follows: When using this version of the for statement, keep in mind that: 1  The initialization expression initializes the loop; it's executed once, as the loop begins. 2  When the termination expression evaluates to false, the loop terminates.
If Statements. Conditional execution refers to the ability to execute a statement or sequence of statements only if some condition holds. The simplest form of conditional statement involves only one possible action. For example, printing out a message when the value of a variable is positive. However, conditional execution can also involve alternatives based on the same or related conditions. For example, we might want to print one message if the variable has a positive value and another message if it doesn't.