Computer Applications
State the difference between entry controlled loop and exit controlled loop.
Java Iterative Stmts
ICSE 2011
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Answer
| Entry controlled loop | Exit controlled loop |
|---|---|
| It checks the condition at the time of entry. Only if the condition is true, the program control enters the body of the loop. | It checks the condition after executing its body. If the condition is true, loop will perform the next iteration otherwise program control will move out of the loop. |
| Loop does not execute at all if the condition is false. | The loop executes at least once even if the condition is false. |
| Example: for and while loops | Example: do-while loop |
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Define a class to accept a number and check whether it is a SUPERSPY number or not. A number is called SUPERSPY if the sum of the digits equals the number of the digits.
Example1:
Input: 1021 output: SUPERSPY number [SUM OF THE DIGITS = 1+0+2+1 = 4, NUMBER OF DIGITS = 4 ]Example2:
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int x=10; while (true){ System.out.println(x++ * 2); if(x%3==0) break; }