warning: comparison of unsigned expression >= 0 is always true

Question

I have the following error when compiling a C file:

t_memmove.c: In function ‘ft_memmove’:
ft_memmove.c:19: warning: comparison of unsigned expression >=          


        

Answer 1

Arithmetic on unsigned results in an unsigned and that's why you are getting this warning. Better to change n - i >= 0 to n >= i.