C++ Library Functions
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Questions and Answers

What is the primary benefit of using library functions in C++ programming?

  • To allow the programmer to create their own functions
  • To make the program more complex and challenging
  • To increase the execution speed of the program
  • To reduce the amount of code that needs to be written (correct)

    • Which of the following library functions is used to calculate the square root of a number?

  • ceil()
  • sqrt() (correct)
  • abs()
  • isdigit()

    • Which header file needs to be included in order to use the sqrt() function?

  • vector
  • string
  • cmath (correct)
  • iostream

    • What is the purpose of the isdigit() function in C++?

    <p>To check if a character is a digit</p> Signup and view all the answers

    What is necessary to use library functions in C++?

    <p>Including the header file</p> Signup and view all the answers

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