What is a for loop and how does it work in C?

What is a for loop and how does it work in C?

• A. A structure that executes code once based on a condition
• B. A control structure that allows repeated execution based on a boolean condition
• C. A method for defining functions within the program
• D. A type of array used for storing multiple values

Answer: (B)

A for loop in C is a control structure specifically designed to allow repeated execution of a block of code. It consists of three main components: initialization, condition, and increment/decrement. When the for loop is initiated, the initialization step sets a loop control variable (often used as a counter). The loop then checks the condition, which is evaluated as a boolean expression. If the condition evaluates to true, the code block within the loop is executed. After executing the code block, the increment or decrement action is performed, modifying the loop control variable. This process continues iteratively until the condition evaluates to false, at which point the loop terminates, and control passes to the next statement after the loop. This structure is ideal for scenarios where the number of iterations is known in advance, making it easier to manage the loop's execution and the associated control variable. The other options do not accurately describe the purpose or function of a for loop, as they refer to different programming constructs, such as single execution based on a condition, function definitions, or data structures like arrays.

A for loop in C is a control structure specifically designed to allow repeated execution of a block of code. It consists of three main components: initialization, condition, and increment/decrement.

When the for loop is initiated, the initialization step sets a loop control variable (often used as a counter). The loop then checks the condition, which is evaluated as a boolean expression. If the condition evaluates to true, the code block within the loop is executed. After executing the code block, the increment or decrement action is performed, modifying the loop control variable. This process continues iteratively until the condition evaluates to false, at which point the loop terminates, and control passes to the next statement after the loop.

This structure is ideal for scenarios where the number of iterations is known in advance, making it easier to manage the loop's execution and the associated control variable. The other options do not accurately describe the purpose or function of a for loop, as they refer to different programming constructs, such as single execution based on a condition, function definitions, or data structures like arrays.