how to find the size of a character array in c++
sizeof vs strlen()
Type: Sizeof operator is a unary operator whereas strlen()
is a predefined function in C.
Data types supported: Sizeof gives actual size of any type of
data (allocated) in bytes (including the null values) whereas
get the length of an array of chars/string.
Evaluation size: sizeof() is a compile-time expression giving you
the size of a type or a variable’s type. It doesn’t care about
the value of the variable. Strlen on the other hand, gives you
the length of a C-style NULL-terminated string.
Summary: The two are almost different concepts and used for
different purposes.