undefined reference to `get_float'

Ive recently started learning how to code, and my code wont compile due to the following error “/tmp/cash-7fe65c.o: In function main': cash.c:(.text+0x1c): undefined reference to get_float’
cash.c:(.text+0x44): undefined reference to `round’
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)”. I dont quite understand what the error is trying to have me correct. Any idea as to what i did wrong ?

You appear to be working with the cs50 course. You’ll want to read the thread on “get_int” which is the same problem you are running into.