How many times the cout statement will executes for the following code?for(j=1;j<=10;j =j-1) { cout<<”Print J 10 times”; }
Question
How many times the cout statement will execute for the following code?
for(j=1; j<=10; j = j-1) {
cout << "Print J 10 times";
}
Solution
Break Down the Problem
-
Understand the Loop: We have a for-loop with the initialization, condition, and increment specified as:
- Initialization:
j = 1 - Condition:
j <= 10 - Increment:
j = j - 1
- Initialization:
-
Analyze the Loop Behavior: The loop starts with
jinitialized to 1 and will continue to execute as long asjis less than or equal to 10. However, the increment decreasesjrather than increasing it.
Relevant Concepts
- For-Loop Structure: A typical for-loop executes the block of code as long as the condition evaluates to true.
- Infinite Loop Recognition: Since
jstarts at 1 and is decremented, the conditionj <= 10will always be true for all iterations, asjwill continuously take negative values.
Analysis and Detail
- Initial State: At the start,
j = 1(which is true for the condition). - First Execution: The loop prints "Print J 10 times".
- Subsequent Values: After the first iteration,
jbecomes0, then-1,-2, etc. The statement continues executing because the condition remains true. - Conclusion: Thus, the loop does not terminate properly and creates an infinite loop situation.
Verify and Summarize
- Since the value of
jdecreases indefinitely, the loop does not exit and will execute thecoutstatement endlessly.
Final Answer
The cout statement will execute infinitely due to the decrementing value of j.
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