1. Math Library Functions
02/12/15

2. Objective
Use functions from the math.h library to do special calculations.

3. Side of Bandana Problem
I am manufacturing bandanas. Given the amount of cloth I can afford for each bandana, I want to know the measure of the side of that square. Write a program to find out the measure of the side of the square bandana.

4. Algorithm
1. Input a 2.
3. Output s

5. Program
bandana.c

6. Built-in Functions Call Syntax: fname(arg1, arg2,… argn)‏ Example:
s = sqrt(area);
Include
#include <math.h>
Must use -lm option when compiling
gcc -lm prog.c

7. Some Functions in cmath

8. Some Functions in cmath

9. Absolute Value of Integers

10. More Functions in cmath
Examples
log(88.5) -->
exp(4.483) --> 88.5

11. Example
Write a program to find the 4th root of a number input by the user.
fourthRoot.c

12. Find Age Difference
Write a program to find the difference in age between two quarterbacks on a team.

13. Algorithm Input qb1 and qb2 difference = |qb1 – qb2| Output difference
Write the program today in lab.
Started in qb.c