C# 0 The Complete Reference

PART I

C h a p t e r   5 :  

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PART IPART I

continue to execute as long as the condition tests true. Once the condition becomes false, the 

loop will exit, and program execution will resume on the statement following the 

for

.

The

for

 loop can proceed in a positive or negative fashion, and it can change the loop 

control variable by any amount. For example, the following program prints the numbers 

100 to –100, in decrements of 5:

// A negatively running for loop.

using System;

class DecrFor {

  static void Main() {

    int x;

    for(x = 100; x > -100; x -= 5)

      Console.WriteLine(x);

  }

}

An important point about 

for

 loops is that the conditional expression is always tested at 

the top of the loop. This means that the code inside the loop may not be executed at all if the 

condition is false to begin with. Here is an example:

for(count=10; count < 5; count++)

  x += count; // this statement will not execute

This loop will never execute because its control variable,