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

STL (140)
OOPS (873)
C++ General (2409)

C++ Interview Questions

Questions Answers Views Company eMail

Does there exist any way to make the command line arguments available to other functions without passing them as arguments to the function?

1251

What is the difference between the functions rand(), random(), srand() and randomize()?

1292

How can a called function determine the number of arguments that have been passed to it?

1142

Write a program to interchange 2 variables without using the third one.

1059

What are the differences between malloc() and calloc()?

1186

To which numbering system can the binary number 1101100100111100 be easily converted to?

1067

What is recursion?

6 2178

What is object file? How can you access object file?

1209

How would you use the functions randomize() and random()?

1083

What is the maximum combined length of command line arguments including the space between adjacent arguments?

1001

How would you use the functions sin(), pow(), sqrt()?

1188

What is a NULL Macro? What is the difference between a NULL Pointer and a NULL Macro?

1116

What is the use of typedef?

1102

Which bit wise operator is suitable for putting on a particular bit in a number?

1213

What are the advantage of using register variables?

1174

Un-Answered Questions { C++ }

Describe private, protected and public?

1081

What are namespaces in c++?

1099

Is c++ an oop?

1102

What does it mean to declare a member function as virtual?

1077

What is class and structure in c++?

1181

What is the output of the following program? Why?

1146

What is a c++ map?

1408

What is a binary file? List the merits and demerits of the binary file usagein C++.

1308

#include #include #include #include void insert(char *items, int count); int main(void) { char s[255]; printf("Enter a string:"); gets(s); insert(s, strlen(s)); printf("The sorted string is: %s.\n", s); getch(); return 0; } void insert(char *items, int count) { register int a, b; char t; for(a=1; a < count; ++a) { t = items[a]; for(b=a-1; (b >= 0) && (t < items[b]); b--) items[b+1] = items[b]; items[b+1] = t; } } design an algorithm for Insertion Sort

2627

Differentiate between declaration and definition.

1052

How is stl different from c++ standard library?

1334

How to call a non virtual function in the derived class by using base class pointer

6565

Const char *p , char const *p What is the difference between the above two?

1217

What is the use of 'using' declaration in c++?

1141

What are Agilent PRECOMPILERS?

1051

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