Design a program that gives simple math quizzes. The program should display two random numbers that are to be added, such as:

$247$

$+129$

The program should allow the student to enter the answer. If the answer is correct, a message of congratulations should be displayed. If the answer is incorrect, a message showing the correct answer should be displayed.

$(1)$ pseudocode

$(2)$ flowchart

$(3)$ C$++$ coding