Warning comparison between pointer and integer

Question

I am getting a warning when I iterate through the character pointer and check when the pointer reaches the null terminator.

 const char* message = "hi";   //I then loop through the message and I get an error in the below if statement.   if (*message == "\0") {   ...//do something  } 

The error I am getting is:

warning: comparison between pointer and integer       ('int' and 'char *') 

I thought that the * in front of message dereferences message, so I get the value of where message points to? I do not want to use the library function strcmp by the way.

Answer 1

It should be

if (*message == '\0') 

In C, simple quotes delimit a single character whereas double quotes are for strings.

Answer 2

This: "\0" is a string, not a character. A character uses single quotes, like '\0'.