Answer / banavathvishnu

union
{
int a;
char ch;
float f;
}tt = {10};
main()
{

printf("%c",tt.ch);
}

In union it is enough to initialise one variable, same
value will reflect the value in remaning members also.

Answer / vadivelt

Since Union follows the memory sharing concept, it is not
possible to initialise all union varibles at a time.

ie.,

union name
{
int a;
char b;
}c = {10, 'a'};

is not possible.

But it is possible to initialise one value at a time.

ie.,

union name
{
int a;
char b;
}c = {10};

or

union name
{
int a;
char b;
}c = {'a'};

What is the difference between ‘g’ and “g” in C?

1 Answers  

---

write a c program to print the values in words eg:- 143 written it has (one hundred and forty three)& 104, 114 are also written words

5 Answers   Captronic, DELL, Google, IBM, Mithi, RCC, Wipro,

---

what are the different storage classes in c?

0 Answers   TCS,

---

What does main () mean in c?

0 Answers  

---

Is null always equal to 0(zero)?

0 Answers  

---

what is the use of operator ^ in C ? and how it works?

2 Answers  

---

how to write palindrome program?

3 Answers  

---

the format specified for hexa decimal is a.%d b.%o c.%x d.%u

7 Answers   TCS,

---

How would you obtain the current time and difference between two times?

0 Answers   TISL,

---

How to delete a node from linked list w/o using collectons?

0 Answers   Zycus Infotech,

---

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.

2 Answers  

---

What does %f mean c?

1 Answers  

---