#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	//Tim hieu ve vong lap (loop) -> while
	//Bai 1
	int cnt;
	//B1. Gan gia tri cho cnt = 0
	cnt = 0;
	
	//B2. Check dieu kien
	while(cnt < 5) {
		printf("\nScooby");
		cnt = cnt + 1;
	}
	
	//Bai 2: Tinh tong cac so nguyen tu 1 -> 10
	//Phan tich: total = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10
	int total = 0, i = 0;
	
	while(i <= 10) {
		total = total + i;
		i = i + 1;
	}
	
	printf("\nTong: %d", total);
	
	//Bai 3: Tinh tong cac so chan chay tu 1 -> 10
	//Phan tich: total = 2 + 4 + 6 + 8 + 10
	//Cach 1:
	total = 0;
	i = 0;
	
	while(i <= 10) {
		total = total + i;
		i = i + 2;
	}
	
	printf("\nTong: %d", total);
	//Cach 2:
	total = 0;
	i = 0;
	
	while(i <= 10) {
		if(i % 2 == 0) {
			total = total + i;
		}
		i = i + 1;
	}
	
	printf("\nTong: %d", total);
	//Cach 3:
	total = 0;
	i = 0;
	
	while(i <= 10) {
		if(i % 2 == 1) {
			i = i + 1;
			continue;
		}
		total = total + i;
		i = i + 1;
	}
	
	printf("\nTong: %d", total);
	
	//Tinh tong cac so chay tu 1 -> 100 & yeu cau dung tinh khi i % 11 = 0
	total = 0;
	i = 1;
	
	while(i <= 100) {
		if(i % 11 == 0) {
			break;
		}
		total = total + i;
		i = i + 1;
	}
	
	printf("\nTong: %d", total);
	
	//Tinh tong cac so chay tu 1 -> 100 & yeu cau dung tinh khi i % 11 = 0
	total = 0;
	i = 1;
	
	while(i <= 100 && i % 11 != 0) {
		total = total + i;
		i = i + 1;
	}
	
	printf("\nTong: %d", total);
	
	
	//Tim hieu do .. while
	cnt = 5;
	while(cnt < 5) {
		printf("\n++Scooby");
		cnt = cnt + 1;
	}
	
	cnt = 5;
	do {
		printf("\n**Scooby");
		cnt = cnt + 1;
	} while(cnt < 5);
	
	//Tim hieu for
	total = 0;
	i = 1;
	while(i<=10) {
		total = total + i;
		i = i + 1;
	}
	printf("\nTong: %d", total);
	
	//Chuyen sang su dung for
	int x = 5;
	x = x + 3;
	//Tuong tu cach viet sau -> viet tat
	x += 3;
	
	x = x - 6;
	//viet tat
	x -= 6;
	
	x = x * 3;
	//viet tat
	x *= 3;
	
	//+, -, *, /, % -> tuong tu nhau
	//TH dac biet +, - : 1 don vi
	x = x + 1;
	//viet tat thanh
	x += 1;
	//viet cach khac
	x++;
	//viet cach khac
	++x;
	
	x = x - 1;
	//viet tat
	x -= 1;
	//viet tat
	x--;
	//viet tat
	--x;
	
	//CHu y doan code sau
	x = 5;
	x++;
	printf("\nx = %d", x);//x = 6
	//x = 6
	++x;//++x -> x++ -> x = x + 1 -> x += 1 -> x=6 -> x=7
	printf("\nx = %d", x);//x = 7
	x--;
	printf("\nx = %d", x);
	--x;
	printf("\nx = %d", x);
	
	x = 5;
	int y = x + 1;
	printf("\nx = %d, y = %d", x, y);
	
	//x = 5
	//gia tri hien tai x = 5 -> z = 5 -> thay doi gia tri x = 6
	int z = x++;//chac chan sau lenh nay -> x se thay doi gia tri -> x = 6
	//x = 6 -> thay doi gia tri x = 7 -> gan gia tri cho k = 7
	int k = ++x;//x = 7
	printf("\nx = %d, z = %d, k = %d", x, z, k);//x = 7, z = 5, k = 7
	//x = 7, z = 5, k = 7
	int t = ++x + x++ - --k + 2;
	//t = 8(x=8) + 8(x=9) - 6(k=6) + 2 = 12 (9:6:12)
	printf("\nx = %d, k = %d, t = %d", x, k, t);
	
	return 0;
}