how to solve with fraction

i have a problem with C programing...
how can i make a program while the inputs is fraction, out put also fraction...
and the output must be the simplified form....

and in this program i can do simple addition,subtraction,multiplication and devision with the inputs...

can anyone teach me please...thanks in advance...

What do you mean by:

Quote:

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while the inputs is fraction

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?
do you get two integers representing the numerator and denominator or just a double?

Useful terms to google with are "lowest common multiple" and "greatest common divisor"