Task1:

Write a C++ program that prompts the user to input two numbers, save the first number in x, save the second number in y, then swap the two numbers.

Solution:(flowchart + Program)

Task2:

Write a C++ program that prompts the user to input three integer numbers, if one of the numbers are negative then compute the sum, otherwise find the largest number among them.

Solution:(flowchart + Program)

Task3:

Write a C++ program that prompts the user to input three students grades (quiz, mid-term, and final scores), then compute the average of the grades, and determine the grade based on the following rules:

-if the average score =90 then grade=A -if the average score >= 70 and <90 then grade=B -if the average score>=60 and <70 then grade=C -if the average score<60 gade =F

Invalid numbers need to be considered.

Solution:(flowchart + Program)