I am doing an C++ assignment on customizable scientific calculator. I wish to ask how to write a program that can automatically identify the variables when i load a formula?
for example, when i input a formula: x + y
the program will display: x?
y?
Look through the input string a character at a time. For anything that's a letter, display the letter and ask the user to enter a value.
Use XML and create a mark up of your own mathematical variety. XMLLite is pretty easy to use and you could write the input from the GUI to a mem block in an IStream.... this will greatly improve the ease of development of actual computations of formulas! IMHO..
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