Introduction - If you have any usage issues, please Google them yourself
With c++ language for primary school students in grades 1-2, randomly selected two integers and addition and subtraction formation formula requires students to answer.
Functional requirements:
(1) the computer randomly out of 10 questions, 10 points for each question, the end of the program shows the student score
(2) to ensure that the formula does not exceed the level of 1 to 2, only allowed within 50 of the addition and subtraction, does not allow the sum of the two or more than 0 to 50 range, the negative is not allowed
(3) each question students have three opportunities to enter the answer, when students enter the wrong answer, to remind students to re-enter, if the end of the three opportunities to output the correct answer
(4) for each question, the students first enter the correct answer was 10 points, the second time the correct answer was 7 points, the third time the correct answer was 5 points, or not score
(5) Total score above 90 shows SMART , 80-90 shows G