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Iterative Statements in C

Iterative Statements

• Iterative statements repeated execution of list of statements, depending on the value of an integer expression
• Syntax:
  while ( <integer expression> ) {
    <statement list>
  }
• As long as the integer expression is true (non-zero,) the statement list is executed repeatedly.
• When the integer expression is false (zero,) the statement list is skipped, and execution continues with the statement following the while statement.
• Style: The statement list should be indented.

A Program using Iterative Statements

• Program listing:

• /*************************************************************** * File: iterative.c * Purpose: Program to demonstrate the conditional * (if .. else) statement * Author: John Young * Date: May 24, 2004 ***************************************************************/ #include <stdio.h> int main () { int Entry; int Counter; printf ("Enter a positive integer: "); scanf ("%d", &Entry); Counter = 1; while (Counter <= Entry) { printf ("Iteration %d of %d\n", Counter, Entry); Counter = Counter + 1; } return 0; }

• Program output:

• >iterative Enter a positive integer: 4 Iteration 1 of 4 Iteration 2 of 4 Iteration 3 of 4 Iteration 4 of 4

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