Question

I have a string which contains a hexadecimal value:

"29E94B25"

I want to convert this hexadecimal string into an unsigned long using a base of 10. e.g. I want to create an unsigned long with a value of:

703154981

How can I do this type conversion?

Answer 1

You can read this string into an unsigned long with strtoul:

unsigned long n = strtoul("29E94B25", NULL, 16);

You can then print it in base-10 with printf.

There’s no such thing as an unsigned long with a base other than 2.