C string and string functions (1), c string functions

C string and string functions (1), c string functions

String is a very common data type in C language. Learning to master the string has a certain effect on understanding the pointer of C language and C language.

What is a string?

String: A string is a char array ending with a null character (\ 0, that is, a character encoded as 0.

From this definition, we can see that the first string is an array, the elements in the second array are of the char type, and the third is to end with an empty character (\ 0. In this case, we may wonder why the string is an array? Why should a string end with a null character?

What is a string literal (A String constant)