how to write the code correctly in c ++? Помогите пожалуйста)

Question

Purpose: to prepare algorithms for the program code for implementation
parallel algorithms
Tasks:
develop and implement linear algorithms for subsequent
parallel programming
Task 1. (5%)
Write a program that multiplies n * n matrices.
Task 2. (30%)
Write a program that implements ITERATIVE and
RECURRENT calculation of the definite integral by the method
KEYSTONE and RECTANGLE method.
Task 3. (5%)
Write a program that copies one matrix to another, with
using a buffer variable
Task 4. (30%)
Write a program that implements quicksort.
Task 5. (30%)
Write a program that implements radix sorting of integers
numbers. The program must parse the BINARY representation of numbers and
adapt to the length of any integer type.
Please help me how to write code)

Answer 1

give ur HW a try then post your code for each program

Answer 2

the problem is that I don’t know about c ++