cat <<'EOF' > expected
int printf ();


int foobar = 100;
int prefix_test = 200;
int test_suffix = 300;

int var_1 = 10;
int var_2 = 20;

int var_A = 30;

int number_12 = 12;

int bazqux = 42;

int main () {
 printf ( foobar=%d\n, foobar);
 printf ( prefix_test=%d\n, prefix_test);
 printf ( test_suffix=%d\n, test_suffix);
 printf ( var_1=%d\n, var_1);
 printf ( var_2=%d\n, var_2);
 printf ( var_A=%d\n, var_A);
 printf ( number_12=%d\n, number_12);
 return 0;
}
EOF

test_cpp <<'EOF'
int printf();

#define CONCAT(a, b) a##b
#define PREFIX(name) prefix_##name
#define SUFFIX(name) name##_suffix

int CONCAT(foo, bar) = 100;
int PREFIX(test) = 200;
int SUFFIX(test) = 300;

#define MAKE_VAR(n) var_##n
int MAKE_VAR(1) = 10;
int MAKE_VAR(2) = 20;

#define A 0
int MAKE_VAR(A) = 30;

#define NUMBER(x, y) number_##x##y
int NUMBER(1, 2) = 12;

#define CONCAT2(a, b) a ## b
int CONCAT2(baz, qux) = 42;

int main() {
    printf("foobar=%d\n", foobar);
    printf("prefix_test=%d\n", prefix_test);
    printf("test_suffix=%d\n", test_suffix);
    printf("var_1=%d\n", var_1);
    printf("var_2=%d\n", var_2);
    printf("var_A=%d\n", var_A);
    printf("number_12=%d\n", number_12);
    return 0;
}
EOF

cat <<'EOF' > expected
int printf ( const char *, ...);


int H ( int n) { return n; }

int main () {
 printf ( %d\n, H ( 123));
}
EOF

test_cpp <<'EOF'
int printf(const char*, ...);

#define F(x) CHECK(G(x))
#define G(x) CHECK(H(x))
#define CHECK(x) x

int H(int n) { return n; }

int main() {
    printf("%d\n", F(123));
}
EOF