Mathematical calculation exercises
no vote
After the program runs, the formula "XX + XX =" (XX is a random positive integer between 1 and 99) will be displayed in the output window, and the user will input the answer, & nbsp; if the answer is correct, it will display "√", otherwise it will display "×", and the statistical results (number of questions, logarithm and time) will be displayed at the end of the exercise. By default, there are 10 questions in each exercise. If the user's input answer is 0, he will be forced to quit halfway