1 What is the difference between the function malloc() and calloc()?

2 What is a pointer in reference to C language? How do you declare pointers? Explain using a suitable example.

3 Explain the term “calling function by reference”. How do you declare pointers? Explain using a suitable example.

 4 Write a program to read two integer X and Y and swap the contents of the variable x and Y using pointers.

5.  what is a structure? Explain the components of a structure.

 6 what is the difference between a structure variable and a union variable? What are the difference between structure and array?

7. (A) Write a short notes on nested structure.

8 What are embedded structure? Give an appropriate  example for embedded  structure.