Distinguish between DO WHILE LOOP and DO LOOP WHILE.
A DO WHILE LOOP repeats as long as the condition evaluates to be true. It is used when it is required that a condition be tested.
while, DO LOOP WHILE also repeats as long as the condition is true. Here, the loop body is executed first before checking the condition.
Write the purpose of the counter in a FOR...NEXT loop.
A for loop used a variables called a counter variables. The values of counter variable increases or decreases during each repetition of the loop. The counter variable is a numeric variable that controls the number of items the loop is executed.
List the different categories of QBASIC looping statements.
The different categories of QBASIC looping statements are:
1. FOR ........ NEXT
2. DO ......... LOOP
a) DO WHILE ....... LOOP
b)DO LOOP ....... WEND
3. WHILE ........ WEND
What is a nested loop? Give an example.
There are several problems which require one look to be placed within another loop. When a loop is present inside another loop, it is called a nested loop.