control statment 4

What is an algorithm?

• A procedure for solving a problem in terms of actions and their order

• A random set of actions

• A procedure for solving a problem without any order

• A procedure for solving a problem with no actions

Answer explanation

An algorithm is a procedure for solving a problem in terms of actions and their order, making the correct answer choice A.

What is pseudocode used for?

• To execute programs

• To confuse programmers

• To write actual code

• To help develop algorithms

Answer explanation

To help develop algorithms

What are the three control structures that all programs could be written in terms of?

• Sequence structure, selection structure, iteration structure

• Sequence structure, loop structure, decision structure

• Selection structure, iteration structure, decision structure

• Sequence structure, decision structure, loop structure

Answer explanation

The three control structures that all programs could be written in terms of are sequence structure, selection structure, and iteration structure.

What is the syntax for if statements in C++?

• if (condition) action1; else { action2; action3; }

• if (condition) action1; else action2;

• if (condition) { action1; action2; }

• if (condition) action;

Answer explanation

The correct syntax for if statements in C++ is 'if (condition) action;'. This is the only option that matches the correct format.

What does the switch selection statement in C++ do?

• Performs a series of actions in order

• Performs a different action based on the condition

• Performs one of many different actions based on the value of an integer expression

• Performs an action if a condition is true or false

Answer explanation

Performs one of many different actions based on the value of an integer expression

What does the while iteration statement in C++ allow you to do?

• Repeat an action while a condition remains true

• Skip an action if a condition is false

• Perform an action based on a condition

• Perform an action only once

Answer explanation

The while iteration statement in C++ allows you to repeat an action while a condition remains true, making it the correct choice.

What is the purpose of input validation in programs?

• To confuse users

• To ensure that inputs are valid

• To slow down the program

• To make the program more complex

Answer explanation

To ensure that inputs are valid

What is arithmetic overflow in C++?

• When the program outputs incorrect results

• When the program runs too slowly

• When adding integers results in a value too large to store in a variable

• When the program crashes

Answer explanation

Arithmetic overflow in C++ occurs when adding integers results in a value too large to store in a variable, causing unexpected behavior.

What is the purpose of the cast operator in C++?

• To stop the program from running

• To confuse programmers

• To force a calculation to produce a floating-point numeric result

• To convert integers to strings

Answer explanation

The purpose of the cast operator in C++ is to force a calculation to produce a floating-point numeric result, not to stop the program, confuse programmers, or convert integers to strings.

What does the setprecision stream manipulator do in C++?

• Indicates how many digits of precision to display for double values

• Indicates the number of decimal positions for integers

• Indicates the number of digits to the left of the decimal point

• Indicates the number of decimal points to display

Answer explanation

Indicates how many digits of precision to display for double values