source: doc/proposals/modules-gen-hdr/hello/c.src.c

#import auto b
#import static helper

//# @
struct c {
    struct b z;
    struct a q;
};

//# $v
struct a glb_ca = { 40 };

//# $v
struct b glb_cb = { { 50 } };

//# $v
struct c glb_cc = { { { 60 } }, { 70 } };

//# $f
void f_c( struct c p ) {
        int printf( const char *, ... );  // scaffold
    printf( "f_c( c{ b{ a{ %d } }, a{ %d } } )\n", p.z.y.x, p.q.x );
    printf( "\tglb_a == a{ %d }\n", glb_a.x);
    printf( "\tglb_ba == a{ %d }\n", glb_ba.x);
    printf( "\tglb_bb == b{ a{ %d } }\n", glb_bb.y.x );
    printf( "\tglb_ca == a{ %d }\n", glb_ca.x);
    printf( "\tglb_cb == b{ a{ %d } }\n", glb_cb.y.x );
    printf( "\tglb_cc == c{ b{ a{ %d } }, a{ %d } }\n", glb_cc.z.y.x, glb_cc.q.x );
    glb_a.x += 1;
    glb_ba.x += 1;
    glb_bb.y.x += 1;
    p.z.y.x += 1;
    p.q.x += 1;
    f_b( p.z );
    f_a( p.q );
    help();  // accept => a's `#import static helper` independent from here
    printf( "f_c end\n" );
}

//# $f
int main() {
    struct a la = { 500 };
    struct b lb = { { 600 } };
    struct c lc = { { { 700 } }, { 800 } };
    f_a(la);
    f_b(lb);
    f_c(lc);
}