Hi, guys.
i need your help, a professional help with C, i got a little challenge and i wanted to know how to start and finish this code.
i will glad that you guys will show me the solution that i will learn from.
thank you.
so the work is:
1.Write a program that receives a file name in the command prompt. The file contains words separated by spaces or
In line descent.
2. The program receives from the user a sequence of letters (uppercase or lowercase) and prints all the lines that contain the sequence
The letters.
3. If the number N is entered, the program will print a sequence of 5 characters starting with N characters from the beginning of each line. To the extent
And the number of characters greater than the length of the line will not print anything. If there are no 5 characters left in the same line they will only be printed
The characters to the end of the line.
4. The program will continue to receive letters or numbers from the user. The program will exit when an empty string is received.

thank you!