Write a C program to Implement the Indexed allocation strategy.

Could I get an example of a program writen in C that uses qsort() to sort its command line vector argv by the length of the strings? This is part of my first project and I don't understand pointers very well. If you have a video on how it is done that would work too. I looked at the meterial provided to me and I still cant rap my head around it. If this is to big of a question if you could baby step me through how pointers work that would be a great help. Thank you

Write a C++ program incorporating recursion to solve the following problem. The program should compile and execute under the UNIX gcc or g++ environments. (show this please) In this program it needs to accept a sequence of k characters from the user and use the characters to produce a k concentric squares. Also assume that there is an index origin of 1, the outermost square is made up of the letter a[k], the square inside that is made from the letter a[k-1], the square inside that is made from the letter a[k-2], and so on, with the innermost square made from the letter a[1]. For example, if k=5, and the values of a are ("R","O","C","K","Y") then the executed program should display:   Y Y Y Y Y Y Y Y Y Y K K K K K K K Y Y K C C C C C K Y Y K C O O O C K Y Y K C O R O C K Y Y K C O O O C K Y Y K C C C C C K Y Y K K K K K K K Y Y Y Y Y Y Y Y Y Y To make this program simpiler to do if you implement it in C++ and write a class; instances of this class can be passed by value. If a class is…

Assignment-2 Write a C program to read input the size and the elements of an integer array from the user and then print all indexes in the array where a positive integer is stored.