4 Best Ways to Convert Hexadecimal to Decimal in Python

SOLVED: In C programming, how do I write a program that will read the contents of a text file, convert the words into hexadecimal values, and add those hexadecimal values together to get the sum and checksum value?For example, the contents of the "input.txt" file are "Hello." I know that when converted to hexadecimal ASCII value, it is 48656C6C6F. What I need help with is how to write a C program that will accomplish this. I have searched on Google for how to add hexadecimal values together, but

Binary and hexadecimal numbers explained for developers | TheServerSide