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For Parts

layout: default title: for Loop Part

for loops are useful for iteration because of the structure inside the parentheses. * The parentheses of a for loop contain three expressions, separated by two semicolons, ;. * None of the expressions is required. * Both ; are required.

for Loop Expressions

initialization - declaring and initializing any variables that might be used in the for loop. * This is executed once. * Only declaration or assignment is allowed here.

termination condition - a condition (which must result in a boolean) to decide whether to end this loop. * This is evaluated before every iteration-even the first one, which means the loop body might not execute at all. * Only a boolean expression is allowed here.

increment - for changing variables. * This is executed after each full iteration. 

for (initialization; termination condition; increment)
      loop body

Steps in a for Loop

  1. initialization statement executes.
  2. termination condition checked. If true, execute the loop.
  3. Loop body executes.
  4. increment executes.
  5. Go to step 2.

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