Computer Applications
What is the output produced by the following code?
int num = 10;
while (num > 0)
{
num = num - 2;
if (num == 2)
continue;
System.out.println(num);
}
System.out.println("Finished");
Answer
8
6
4
0
Finished
Working
The initial value of num is 10. Every time the while loop is executed, num decreases by 2. Execution of the loop is summarized in the table below:
| Iteration | num | Test Conditionnum > 0 | Output | Remarks |
|---|---|---|---|---|
| 1st | 10 | True | 8 | num becomes 8 (10 - 2)if condition false |
| 2nd | 8 | True | 6 | num becomes 6 (8 - 2)if condition false |
| 3rd | 6 | True | 4 | num becomes 4 (6 - 2)if condition false |
| 4th | 4 | True | num becomes 2 (4 - 2)if condition becomes true, Continue statement sends control to next iteration of while loop | |
| 5th | 2 | True | 0 | num becomes 0 (2 - 0)if condition false |
After 5th iteration, num becomes 0 so the loop terminates.
Since, the body of if contains continue statement, when num becomes 2, control ignores the remaining statements in the loop and starts the next iteration of the loop.
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