1-Write python code that implements an indexed array and an associative array (dictionary). 2- Use examples to explain the two main problems with Pointers 3- What is the output of the following Python code: x=3 y="5" print (x+y)

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using c++ with comments please

When I excute, it gives me this error. I could't figure out exactly Enter file: grades1.txtTraceback (most recent call last):  File "main.py", line 52, in <module>    main()  File "main.py", line 45, in main    grades = read_grades()  File "main.py", line 7, in read_grades    grades.append(int(line))ValueError: invalid literal for int() with base 10: '\n'

Develop python program of function randomArray(m, n) that takes two integers as argument and returns a 2D m-by-n array with random elements in it. Develop python program of function adder(a1, a2) that reads two 2D arrays of the same size and returns an array that is the summation of a1 and a2. To add the two arrays, you need to add their elements, correspondingly. Develop a  python program of function inverseArray(a) that takes a 2D-array as argument and inverses the array. You will need to inverse the rows, first and then inverse the columns, next. For instance, if the array = [[2, 3, 4], [5, 6, 7]], the inverse will be = [[7, 6, 5], [4, 3, 2]]

Create a c ++ program keeping in mind the concepts about Pointers (Pointers). Instructions:  Write a program to find the maximum of a set of integers within an array. The program should ask the user to enter each of the values. At the end the program prints a pointer to point to the maximum value. The example is shown in the image Note create the program in c ++