#include <stdio.h>

void TamGiacVuongDac(int, char);
void TamGiacVuongRong(int, char);
void HinhChuNhatDac(int, char);
void HinhChuNhatRong(int, char);
void TamGiacCanDac(int, char);
void TamGiacCanRong(int, char);


int main(){
	int ChucNang, ChieuCao;
	char KyTu;
	printf("1. Nhap chieu cao va ky tu ve\n");
	printf("2. Ve hinh tam giac vuong dac\n");
	printf("3. Ve hinh tam giac vuong rong                    #Yeu Cau chieu cao lon hon 3\n");
	printf("4. Ve hinh chu nhat dac\n");
	printf("5. Ve hinh chu nhat rong\n");
	printf("6. Ve tam giac can dac\n");
	printf("7. Ve tam giac can rong\n");
	printf("8. Thoat\n");
	chonChucNang:
	printf("Chon chuc nang: ");
	scanf("%d", &ChucNang);
	switch(ChucNang){
		case 1:
			printf("Nhap chieu cao: ");
			scanf("%d", &ChieuCao);
			fflush(stdin);
			printf("Nhap ky tu: ");
			scanf("%c", &KyTu);
			goto chonChucNang;
		case 2:
			printf("Day la tam giac vuong dac:\n");
			TamGiacVuongDac(ChieuCao, KyTu);
			break;  
		case 3:
			printf("Day la tam giac vuong rong:\n");
			TamGiacVuongRong(ChieuCao, KyTu);
			break;
		case 4:
			HinhChuNhatDac(ChieuCao, KyTu);
			break;
/*		case 5:
			HinhChuNhatRong(ChieuCao, KyTu);
		case 6:
			TamGiacCanDac(ChieuCao, KyTu);
		case 7:
			TamGiacCanRong(ChieuCao, KyTu);
		case 8:
			return 0;
	}
*/
	return 0;
}

void TamGiacVuongDac(int ChieuCao, char KyTu){
	for(int i = 0; i <= ChieuCao; i++){
		for(int j = 0; j < i; j++){
			printf("%c", KyTu);
		}
		printf("\n");
	}
}

void TamGiacVuongRong(int ChieuCao, char KyTu){
	for(int i = 0; i < ChieuCao; i++){
		for(int j = 0; j <= i; j++){
			if(j == 0 || j == i || i == ChieuCao - 1){
				printf("%c", KyTu);
			}else printf(" ");
		}
		printf("\n");
	}
}

void HinhChuNhatDac(int ChieuCao, char KyTu){
	for(int i = 0; i < ChieuCao, i++){
		for(int j = 0; j < ChieuCao; j++){
			printf("%c", KyTu);
		}
		printf("\n");
	}
}