WHILE-WEND statement

The WHILE-WEND statement executes a series of statements in a loop as long as given condition is true.

Syntax

LN WHILE expression

.

.

.

[loop statements]

.

.

.

WEND

Where ,

LN       : Line Number

expression     : valid BASIC expression

loop statement  : Series of statement which are to be repeated

Points to Remember

• If expression is true, loop statements are executed until the WEND statement is encountered.
• If expression not true execution starts with the statement following the WEND statement.

     Example

1. Write a BASIC program to find the sum of first N numbers using WHILE-WEND loop.

CS 7.9 Display on the screen for WHILE-WEND statement.

Ok

LIST

5     REM Learning use of the WHILE....WEND statement

10   INPUT "ENTER VALUE OF N:" ; N

20   LET SUM = 0 : LET CNT = 0

30  WHILE (CNT<N)

40  CNT = CNT+1

50  SUM = SUM+CNT

60 WEND

70 PRINT " The sum of number from 1 to 100 "; N; is  : "; SUM 

80 END

Ok

RUN

ENTER VALUE OF N: : ? 100

The sum of number 1 to 100 is : 5050 

Ok