Common Logical Errors in Programming

The video tutorial covers common logical errors in programming, focusing on comparison operators, variable overwriting, and for loop iterations. It explains how mixing up comparison signs can lead to incorrect outcomes, how overwriting variables can cause data loss, and how for loops can iterate more times than expected due to zero-based counting. Solutions include using correct comparison signs, employing temporary variables for swapping, and adjusting loop ranges.

What is the main issue when using the wrong comparison operator in a conditional statement?

• The program will crash immediately.

• The condition will not perform as expected.

• The condition will always evaluate to true.

• The program will run slower.

Which of the following operators checks if a number is less than or equal to another number?

• <=

• !=

• >=

• ==

What is a common mistake when swapping the values of two variables?

• Using a temporary variable.

• Overwriting one variable with the other.

• Forgetting to declare the variables.

• Using the wrong data type.

How can you prevent data loss when swapping two variables?

• Swap them directly.

• Use a constant variable.

• Use a global variable.

• Use a temporary variable.

What is the result of swapping two variables without a temporary variable?

• The variables remain unchanged.

• The program crashes.

• The values are lost.

• The variables are swapped successfully.

Why might a for loop run more times than expected?

• The loop condition is incorrect.

• The loop starts counting from one.

• The loop starts counting from zero.

• The loop uses a while condition.

How can you ensure a for loop runs exactly five times?

• Use a while loop instead.

• Start the loop from one to five.

• Start the loop from zero to four.

• Use a do-while loop.

What is a common logical error in for loops?

• Using a while loop instead of a for loop.

• Using the wrong loop variable.

• Counting from zero leading to an extra iteration.

• Forgetting to initialize the loop variable.

What is the effect of counting from zero in a for loop?

• It causes the loop to run one less time.

• It causes the loop to run one extra time.

• It causes a syntax error.

• It has no effect on the loop.

What is a potential issue when using a for loop in programming exams?

• The loop might not execute at all.

• The loop might run indefinitely.

• The loop might not compile.

• The loop might run more times than intended.