#pragma once
#include<stdio.h>
#include<conio.h>

struct Gio 
{
	int Hour, Minute, Second;
};
typedef struct Gio GIO;

void NhapGio(GIO &);
void XuatGio(GIO);

Line 8: warning: #pragma once in main file
Line 17: error: conio.h: No such file or directory
Line 11: error: expected ';', ',' or ')' before '&' token