C++ General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C++ General Interview Questions

Questions Answers Views Company eMail

Evaluate the following expression as C++ would do :8 * 9 + 2 * 5 a) 82 b) 79 c) 370 d) list

1000

Which is not an ANSII C++ function a) sin() b) tmpnam() c) kbhit()

1530

What does getch() do according to the ANSI C++ standard a) Reads in a character b) Checks the keyboard buffer c) Nothing in particular (Its not defined there)

1048

Will a C compiler always compile C++ code a) Yes b) No c) Only optimized compilers

1047

What ANSI C++ function clears the screen a) clrscr() b) clear() c) Its not defined by the ANSI C++ standard

1028

What number of digits that can be accuratly stored in a float (based on the IEEE Standard 754)? a) 6 b) 38 c) An unlimited number

1272

Which of the following is evaluated first: a) && b) || c) !

2364

What does 7/9*9 equal ? a) 1 b) 0.08642 c) 0

953

Which of the following is not a valid declaration for main() a) int main() b) int main(int argc, char *argv[]) c) They both work

1075

Evaluate as true or false: !(1 &&0 || !1) a) True b) False c) Invalid statement

1180

Which command properly allocates memory a) char *a=new char[20]; b) char a=new char[20]; c) char a=new char(20.0);

1053

What operator is used to access a struct through a pointer a) >> b) -> c) *

1105

True or false, if you keep incrementing a variable, it will become negative a) True b) False c) It depends

2378

What character terminates all character array strings a) b) . c) END

1274

If you push the numbers (in order) 1, 3, and 5 onto a stack, which pops out first a) 1 b) 5 c) 3

1376

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Un-Answered Questions { C++ General }

What is the arrow operator in c++?

1016

Explain differences between new() and delete()?

1092

What happens when the extern "c" char func (char*,waste) executes?

1087

Explain what are single and multiple inheritances in c++?

1020

Describe the advantages of operator overloading?

1040

Which is the best c++ software?

1096

How a new element can be added or pushed in a stack?

1018

Explain virtual class?

1024

Write a C++ Program to check whether a number is prime number or not?

1127

Is vector a class in c++?

1039

Is c++ a difficult language?

1118

Should you pass exceptions by value or by reference?

1133

Reads in the size of a square from the screen; 2. Prints a hollow square of that size out of “-“, “|” and blanks on screen; 3. Prints the same hollow square onto a text file. Your program should work for squares of all side sizes between 1 and 20. --- │ │ │ │ │ │ ---

2102

What's c++ used for?

1110

What is the difference between containment and delegation?

1328

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