How can I solve time dilation problems of physics in C , the problem is no of digits in the speed of light.

Question

https://code.sololearn.com/civjYO98Lf83/?ref=app here is my attempt ,i always get nan or 0 or 1 as output.
Formula goes like this T=t/√1-(v²/c²) where v and c take large values.

Answer 1

You forgot parenthesis around v*v and c*c

Answer 2

Dennis sir thanks for the help it fixed my problem now the code is working.