in math.h library there are many maths functions,you have to just put function to calculate. to use math.h library function we have to add "#include<math.h>" at top of the program.Following are the functions of math.h library.
| Functions | Short discription |
| floor() | floor() is used to get the floor of any number |
| ceil() is used to get ceil of any number |
| round() | round() is used to round off any number |
| trigonomatric | there are six trigonomatric functions in C like sin,cos,tan,tanh,cosh,sinh |
| sqrt() | sqrt() function is used to get ther square root of any number |
| pow() | power function is used to get power of any number for eg.23 |