Null-Terminated string

Question

Which of the following are null-terminated string?

char *str1 = \"This is a string.\";
char *str2 = \"This is a string.\\0\";
char str3[] = \"This is a strin         


        

Answer 1

They are all null-terminated (str2 and str5 are actually doubly-null-terminated) because using double quotes is a shorthand for a null-terminated char array.

So this:

"Hello"

Is actually this:

{'H', 'e', 'l', 'l', 'o', '\0'}

Variables pointing to string literals such as these should be declared as const.