Math Library Functions 02/12/15

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

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.

Algorithm 1. Input a 2. 3. Output s

Program bandana.c

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

Some Functions in cmath

Some Functions in cmath

Absolute Value of Integers

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

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

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

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