Can I get best performance making static variables?

Question

Why some people do:

char baa(int x) {
    static char foo[] = \" .. \";
    return foo[x ..];
}

instead of:

char baa(int x) {
          


        

Answer 1

Defining a variable static in a method only means that the variable is not "released", i.e. it will keep its value on subsequent calls. It could lead to performance improvement depending on the algorithm, but is certainly not not a performance improvement by itself.