What are the references in C++?

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Question:
What are the references in C++?

1.An alternative name for already existing variables

2.A pointer to a variable

3.A new type of variables

4. A new type of constant variable

Posted Date:-2021-02-21 05:14:35

More MCQS Questions and answers

  1. A void pointer cannot point to which of these?
  2.  The if..else statement can be replaced by which operator?
  3.  What we can’t do on a void pointer?
  4.  Which is more effective while calling the functions?
  5.  Which of the following operator is used while declaring references?
  6. How a reference is different from a pointer?
  7. How many can max number of arguments present in function in the c99 compiler?
  8. How to declare a wide character in the string literal?
  9. Identify the correct sentence regarding inequality between reference and pointer.
  10. Identify the incorrect statement.
  11. Which of the following statement is not true about preprocessor directives?
  12. Pick the correct statement about references in C++.
  13. Pick the correct statement about references.
  14. Regarding the following statement which of the statements is true? const int a = 100;
  15. The data elements in the structure are also known as what?
  16. The declaration of the structure is also called as?
  17. The difference between x and ‘x’ is?
  18. The pointer can point to any variable that is not declared with which of these?
  19. The switch statement is also called as?
  20. The void pointer can point to which type of objects?
  21. What are mandatory parts in the function declaration?
  22. What are the references in C++?
  23. What does a reference provide?
  24. What is the difference between references and pointers?
  25. What is the scope of the variable declared in the user defined function?
  26. What is the use of dynamic_cast operator?
  27. What is this operator called ?:?
  28. What will be used when terminating a structure?
  29. What will happen when the structure is declared?
  30. When does the void pointer can be dereferenced?
  31. Where does the execution of the program starts?
  32. Which function is used to check whether a character is a number?
  33. Which function is used to check whether a character is a tab or space?
  34. Which function is used to check whether a character is an alphabet?
  35. Which function is used to check whether a character is hexadecimal?
  36. Which function is used to check whether a character is printable on console?
  37. Which function is used to check whether a character is punctuation mark?
  38. Which function is used to check whether a character is tab or a control code?
  39. Which function is used to check whether a character is tab or space or whitespace control code( , ,etc.)?
  40. Which looping process is best used when the number of iterations is known?
  41. Which of the following accesses a variable in structure *b?
  42. Which of the following function must use reference.
  43. Which of the following is a properly defined structure?
  44. Which of the following is incorrect?
  45. which of the following is used to terminate the function declaration?
  46. Which of the following statement(s) is/are correct?
  47. Which operator is having the highest precedence?
  48. Which operator is having the right to left associativity in the following?
  49. Which reference modifier is used to define the reference variable?
  50. Which value can we not assign to reference?
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