Structs, unions and enums

s Point
  x,y: f64
u Number
  i: i32
  d: f64
e Color red,green=5,blue
f main()
  p: Point = {1,2}
  n: Number
  n.i=3
  < p.x+p.y != n.i || blue != 6

typedef struct Point Point;
struct Point {
    double x,y;
};

typedef union Number Number;
union Number {
    int i;
    double d;
};

typedef enum {
    red,
    green=5,
    blue
} Color;

int main(void) {
    Point p = {1,2};
    Number n;
    n.i=3;
    return p.x+p.y != n.i || blue != 6;
}

Types are NanoC type words (i8 to i64, u8 to u64, f32, f64, bool, char, str, size, ptr), prefix pointers such as next: *Node, and record, enum or typedef names. Any other C spelling (multi-word types, function pointers, attributes) goes in backticks or an @c block; unmarked C is rejected with a diagnostic. Grouped named fields are supported; initialized local declarations require one name to avoid duplicated evaluation.