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C programming problem. read carefully and full answers please. thank you.

Write a function to do the conversion of temperatures between Celsius and Fahrenheit. The prototype of the function is: float F2COrC2F(int temp, int direction) where if direction-1, the function will convert the temperature temp in Celsius to Fahrenheit and return the Fahrenheit; if direction-0, the function will convert the temperature temp in Fahrenheit to Celsius and return the Celsius