sis.h

#ifndef sis
#define sis 
#include "sis.h"
#include "unistd.h"
#include "stdio.h"
#include "stdlib.h"
#include "ctype.h"
#include "locale.h"
#include "time.h"

/*
 * veja mais em 
 * https://github.com/rafatrinity
 */

void linha();
char SISTEMA;
char apresenta(){
	printf("\n\n");
	printf("\t\t\t.::::.  ::      .::::.  ||\n");
	printf("\t\t\t::  ::  ::      ::  ::  ||\n");
	printf("\t\t\t::  ::  ::      ::::::  ||\n");
	printf("\t\t\t*::::*  ::::::  ::  ::  ::\n\n");
	printf("\n\n");
	sleep(1);
	printf("\tPOR GENTILEZA, INFORME QUAL SISTEMA OPERACIONAL VC UTILIZA:\n\n\tD=DOS\n\tU=UNIX\n\n");
	printf("\t\tDUVIDAS? DIGITE (i) PARA MAIS INFORMAÇÕES\n");
	printf("\t"); 
	linha();
	pergunta:
	fflush(stdin);
	scanf("%c",&SISTEMA);
	SISTEMA=toupper(SISTEMA);
	switch(SISTEMA){
		case 'D':
		system("cls");
		fflush(stdin);
		break;
		case 'U':
		system("clear");
		fflush(stdin);
		break;
		case 'I':
		printf("\nDOS = Window\nUNIX = Mac e Linux(há exeções)");
		getchar();
		goto pergunta;
		break;
		default:
		printf("\nENTRADA INVALIDA, FAVOR DIGITAR SOMENTE AS LETRAS INDICADAS\n");
		goto pergunta;
	}
	return SISTEMA;
}

//============================escreve uma linha na tela=========================

void linha(){
	usleep(100000);
	for (int i = 0; i < 60; ++i)
		printf("=");
	usleep(100000);
	printf("\n");
}

//==================================cabeçalho=================================

void cab(){
	if (SISTEMA == 'D')
		system("cls");
	else
		system("clear");
	time_t t = time(NULL);
	struct tm tm = *localtime(&t);
	printf("============================================================\n");
	printf("\tUNICARIOCA - ADIVINHA - ");
	printf("%d/%d/%d - %d:%d\n",tm.tm_mday,tm.tm_mon+1,tm.tm_year + 1900,tm.tm_hour,tm.tm_min);
	printf("============================================================\n\n");
}

void fim(){
	if (SISTEMA == 'D')
		system("cls");
	else
		system("clear");
	printf("\t::       :: .::::::.  ::    :::::::::: :::::::\n");
	printf("\t ::     ::  ::    ::  ::        ::     ::\n");
	printf("\t  ::   ::   ::    ::  ::        ::     ::::::: \n");
	printf("\t   :: ::    ::    ::  ::        ::     ::\n");
	printf("\t    ::      *::::::*  :::::::   ::     :::::::\n\n");
	usleep(500000);
	printf("  .::::::  ::::::: :::      :::  ::::::.  ::::::.   :::::::\n");
	printf("  ::       ::      ::::    ::::  ::   ::  ::   ::   ::\n");
	printf("  *:::::.  ::::::: :: ::  :: ::  ::::::*  ::::::*   :::::::\n");
	printf("       ::  ::      ::  ::::  ::  ::       :: ::     ::\n");
	printf("  ::::::*  ::::::: ::   ::   ::  ::       ::  ::    :::::::\n");
}

#endif