Please explain each line of your codes. The 5 conditions of the program are following.

Please not import #include or std;:string. DON'T USE CLASS FOR THIS PROGRAM User input a string. Output the length of a string input by the user. Please use length() string operators and an infinite for loop. Note: use static array as holder for char data type Use Isalpha string operator to determine if each characters in string are English alphabetical characters. Output the location of non-alphabetical character Output if string contains any non-alphabetic characters Use Toupper string operator to transform all alphabetical characters in a string to Uppercase characters. Use Tolower string operator to transform all alphabetical characters in a string to lowercase characters. Use push_back string operator to allow the user to input a character to add to a string. Add character to the end of the String or after the last character. 1. 2. 3. 4. 5. Note: It is a C++ program, it is about independent functions to simulate string library. Please don't copy and paste the others solution from chegg. Also run the program through your computer's terminal and attach the screen shot