1. What is the output of printf("%d")
2. What will happen if I say delete this
3. Difference between "C structure" and "C++ structure".
4. Diffrence between a "assignment operator" and a "copy
constructor"
5. What is the difference between "overloading" and
"overridding"?
6. Explain the need for "Virtual Destructor".
7. Can we have "Virtual Constructors"?
8. What are the different types of polymorphism?
9. What are Virtual Functions? How to implement virtual
functions in "C"
10. What are the different types of Storage classes?
11. What is Namespace?
12. What are the types of STL containers?.
13. Difference between "vector" and "array"?
14. How to write a program such that it will delete itself
after exectution?
15. Can we generate a C++ source code from the binary file?
16. What are inline functions?
17. Talk sometiming about profiling?
18. How many lines of code you have written for a single
program?
19. What is "strstream" ?
20. How to write Multithreaded applications using C++?
21. Explain "passing by value", "passing by pointer" and
"passing by reference"
22. Write any small program that will compile in "C" but not
in "C++"
23. Have you heard of "mutable" keyword?
24. What is a "RTTI"?
25. Is there something that I can do in C and not in C++?
26. Why preincrement operator is faster than postincrement?
27. What is the difference between "calloc" and "malloc"?
28. What will happen if I allocate memory using "new" and
free it using "free" or allocate sing "calloc" and free it
using "delete"?
29. What is Memory Alignment?
30. Explain working of printf.
31. Difference between "printf" and "sprintf".
32. What is "map" in STL?
33. When shall I use Multiple Inheritance?
34. What are the techniques you use for debugging?
35. How to reduce a final size of executable?
36. Give 2 examples of a code optimization.
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Answer / saikumar
1)ans :Error generated .because every statement end with semicolon(;),but in the given question there is no semicolon(;).
2)ans :The program will be terminated.
3)ans :IN 'c' language program should write from main()function and it's execution starts from main()function top to bottom.
4)ans:assignment operator (=)is operator which is assign the right most result to left most operand.
copy constructor:constructor means which is used to create the objects (or) any thing
| Is This Answer Correct ? | 3 Yes | 5 No |
Answer / saikumar
22)ans :
main()
{
int i=1,n=10;
while(i<=n)
{
printf("%d\n");
}
| Is This Answer Correct ? | 0 Yes | 5 No |
C passes By value or By reference?
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25. It takes five minutes to pass a rumour from one person to two other persons. The tree of rumour continues. Find how many minutes does it take spread the rumour to 768 persons. ?
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C 
