11.3 Structured Programming Cambridge iAS 9618

What is the purpose of a procedure in programming?

• To define a block of code that performs a specific task.

• To store data in a variable.

• To execute code based on conditions.

• To define a variable in a program.

Which of the following is true about the use of procedures?

• Procedures are used to avoid repeating code by modularizing tasks.

• Procedures must always return a value.

• Procedures are used for data storage.

• Procedures cannot have parameters.

Which of the following is a valid reason for using a procedure in algorithm construction?

• To break down complex tasks into smaller, reusable blocks of code.

• To perform a single operation repeatedly without conditions.

• To store data in an array for future use.

• To run a block of code based on a fixed condition.

What is a parameter in a procedure?

• A variable passed into a procedure to provide input values.

• A block of code that executes a specific task.

• A fixed value used in a condition.

• A return value from a function.

What is the difference between passing a parameter by reference and by value?

• Passing by reference allows the procedure to modify the argument, while passing by value sends a copy of the argument.

• Passing by reference sends a copy of the argument, while passing by value directly modifies the original argument.

• Passing by reference and passing by value are identical in effect.

• Passing by reference is used only for arrays, while passing by value is for primitive types.

What is the primary use of a function in structured programming?

• To compute and return a value that can be used in expressions.

• To perform a task that does not require a return value.

• To store a set of related data in a variable.

• To execute a block of code repeatedly until a condition is met.

Where is a function typically used in an algorithm?

• In an expression, where the function's return value is used.

• In the main body of a program, to control loops.

• In a conditional structure to define the outcome.

• To organize code into reusable blocks without needing a return value.

What is the return value of a function?

• The value that the function computes and returns to the calling code.

• The value of the function's parameters.

• The block of code executed by the function.

• The local variables used within the function.

What is the role of the procedure/function header?

• It defines the name, parameters, and type of a procedure or function.

• It defines the logic that the procedure or function will execute.

• It stores the return value of a function.

• It checks the condition before executing the procedure or function.

What is the procedure/function interface?

• It defines the input parameters and return value for a procedure or function.

• It specifies the conditions under which the procedure or function will execute.

• It is the body of the procedure or function.

• It lists all the variables that the function will use.