[OpenSourceSw] static example

#include <stdio.h>

static int foo()
{
static int i = 10;

i++;

printf("i: %d\n", i);

return 0;
}

int main()
{
int i = 20;

printf("i: %d\n", i);

foo();
foo();
}

=====
i: 20
j: 11
j: 12