Output Questions for Class 10 ICSE Computer Applications
Analyze the following program segment and determine how many times the loop will be executed. What will be the output of the program segment?
int k=1,i=2;
while(++i<6)
k*=i;
System.out.println(k);
Java
Java Iterative Stmts
ICSE 2010
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Answer
60
The loop executes 3 times.
Working
This table shows the change in values of i and k as while loop iterates:
| i | k | Remarks |
|---|---|---|
| 2 | 1 | Initial values |
| 3 | 3 | 1st Iteration |
| 4 | 12 | 2nd Iteration |
| 5 | 60 | 3rd Iteration |
| 6 | 60 | Once i becomes 6, condition is false and loop stops iterating. |
Notice that System.out.println(k); is not inside while loop. As there are no curly braces so only the statement k *= i; is inside the loop. The statement System.out.println(k); is outside the while loop, it is executed once and prints value of k which is 60 to the console.
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