#include <stdio.h>

typedef struct {
    float x,y,z;
}Vec3f;

void hello (float a, Vec3f b) {
    printf("%.2f, %.2f, %.2f, %.2f\n", a, b.x, b.y, b.z);
}

int main() {
    printf("Hello, world!\n");


    Vec3f one_two_three = {1.1f,2.2f,3.3f};    
    hello(4.1f, one_two_three); //Outputs 4.10, 1.10, 2.20, 1.10 instead of 4.10, 1.10, 2.20, 3.30


    return 0;
}