Arithmetic design ideas

Design ideas:

1. The title does not repeat first use the Srand function, generate two random numbers to do the operation, regenerate into a random number, control operation symbol.

2. Is there a multiplication method, range of values, negative numbers, remainder, fractions can be used to allow users to choose. Depending on the user's chosen results, different code is executed according to the user's choice before each function.

3. Put together each new formula that is generated, and each generates a new calculation to verify that it is duplicated with the previously generated calculation, using a string for example, to regenerate a new calculation if repeated.

4. Printing as long as two user input of the face can be controlled, a control of the number of printing, a control to print the spacing of each formula.

Arithmetic design ideas