c array - warning: format not a string literal

Question

I\'m attempting to learn C and already I\'ve run into an issue. I assume its trivial but I need to know it. I have written:

#include 
#include         


        

Answer 1

The warning is caused by the compiler wanting the first argument of printf to be a string literal. It wants you to write this:

printf("%s\n", str_a);

This is because the first parameter of printf is the format string. The format arguments are then passed after that.

_{Note: You can in fact use a variable as a format string, but you probably shouldn't do that. That's why the compiler issues a warning and not an error.}