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Description |
The for statement gives a one or more instructions to be repeated a specified number of times. | |||||||||||||||||||||||||||||||||||
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Syntax |
for counter condition action | |||||||||||||||||||||||||||||||||||
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Parameters |
counter The counter must be a variable initialized to a number. Initialization occurs when the for() statement is entered. The counter is automatically incremented with each passage through the statement.
condition The condition controls the statement. Each passage through the statement, the relationship between the counter and the condition is evaluated. When the condition is satisfied, the statement ends.
action The action is the instruction to be repeated. To write multiple instructions, use a begin/end block. | |||||||||||||||||||||||||||||||||||
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Return Value |
NA | |||||||||||||||||||||||||||||||||||
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Examples |
fact5(n)=begin result=1 for i=1 to n result=result*i result end | |||||||||||||||||||||||||||||||||||
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Comments |
The for statement is very similar to the while statement. In the example, the variable n is passed as an argument to the formula. A variable result is declared equal to 1. The for statement instructs the computer to set the value of result to the product of result multiplied by i. This calculation is repeated until i equals n.
The following table summarizes how the return value of a call to fact5() with an argument of 5 is determined:
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