What is the difference between str==NULL and str[0]=='\0' in C?

What is the difference between str==NULL and str[0]=='\0' in C?

c pointers gcc cstring

c

How to prevent multiple definitions in C?

c multiple-definition-error

c

When is it valid to access a pointer to a "dead" object?

c pointers language-lawyer undefined-behavior

c

What is the difference between intXX_t and int_fastXX_t?

c optimization types integer c99

c

How do I print a #defined constant in GDB?

c gdb c-preprocessor

c

Why isn't there int128_t?

c++ c c++-standard-library c-standard-library

c

Embedding binary blobs using gcc mingw

c gcc binary mingw

c

What does the %*s format specifier mean?

c printf format-specifiers

c

building a .so that is also an executable

c linux shared-libraries glibc dlopen

c

How does malloc work in a multithreaded environment?

c linux gcc malloc x86-64

c