How do I solve this questions using C program?

Question

1. Calculate Horizontal and Vertical Components of a given force

2. Calculate Racing Car speed given engine RPM and gear selection

3. Convert Fahrenheit temperature signal to Celsius every second

4. Detecting extreme digital audio signals

Answer 1

Well, for the first one, you can use the two simple formulas for getting the components of a vector. These are Vx = VcosA and Vy=VsinA where V is the vector and A is the angle of the vector.

The second one depends on the actual gear ratios in the transmission, but if you know that it's simple multiplication or division.

The third can be done with the formula F = (9/5)C + 32 or it's inverse.

The fourth is actually quite tricky. I would look on Google for audio filter algorithms.