Days to Learn Advance C language, In debth C questions and answers

Day 1:

1. Compilation :

                Find the compilation steps from .c format to executable format.

                Collect the files which was generated in each steps

                Analysis the file and understand the purpose of each file.

Day 2:

2. What are all storage class is available in c,  the scope (visibility) and life-time of variables and/or functions within a C Program.
3. Difference between static function & normal function.  With example programs.

Day 3:

4. Memory Layout of C Programs ?
1. Check the size of text, data, and bss segments of below programs.
1. Check the following simple C program

                                                           #include <stdio.h>

                                               int main(void)

                                                          {

                                                                return 0;

                                                           }

2.   Let us add one global variable in program, now check the size of bss (highlighted in red color)

                                                         #include <stdio.h>

                                              int global; /* Uninitialized variable stored in bss*/

                                              int main(void)

                                                         {

                                                             return 0;

                                                         }

3. Let us add one static variable which is also stored in bss.

                                                        #include <stdio.h>

                                             int global; /* Uninitialized variable stored in bss*/

                                             int main(void)

                                                       {

                                                            static int i; /* Uninitialized static variable stored in bss */

                                                            return 0;

                                                        }

4. Let us initialize the static variable which will then be stored in Data Segment (DS)

                                            #include <stdio.h>

                                            int global; /* Uninitialized variable stored in bss*/

                                            int main(void)

                                                      {

                                                           static int i = 100; /* Initialized static variable stored in DS*/

                                                           return 0;

                                                       }

5.  Let us initialize the global variable which will then be stored in Data Segment (DS)

                                                       #include <stdio.h>

                                            int global = 10; /* initialized global variable stored in DS*/

                                            int main(void)

                                                       {

                                                           static int i = 100; /* Initialized static variable stored in DS*/

                                                           return 0;

                                                       }

Day 4:

5. Read below to understand the heap memory:
1. What is heap memory?
2. Difference between malloc(), calloc() & realloc()
3. What is Memory Leak? How can we avoid?
1. Answer: Memory Leak
4. what is the difference between memory leak & memory wastage
1. Answer: Memroy Leak vs Memory wastage
5. Why need to use free() ?
6. what is heap corruption in c ?