Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Pow function in C

  1. Oct 15, 2004 #1
    How do you use the pow function from math.h?
    Here's how I've been using it and the compiler gives me trouble:
    month_pay = price*i*pow(1.0 + i, (double)n);

    This is the way it was written on the handout from our professor but he makes a lot of typos, so I want to make sure if this is the right way to use pow or not.
  2. jcsd
  3. Oct 15, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    It shouldn't take more than a minute or two to run a short test program through your compiler to find out!

    You should have no problem demonstrating that pow(a, b) is equivalent to a^b.
  4. Oct 15, 2004 #3
    well, if you are using gcc I believe you must use the -lm option when compiling....AND include math.h

    so you must do:
    gcc -lm filename.c
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook