What's the Use of '\r' escape sequence?

What's the Use of '\r' escape sequence?

c++ c escaping carriage-return

c

What does the symbol \0 mean in a string-literal?

c++ c string escaping string-literals

c

Why do '?' and '\?' give the same output in C?

c escaping

c

Why is "\?" an escape sequence in C/C++?

c++ c string gcc escaping

c