Untitled

#include<stdio.h>
#include<math.h>

int main()
{
	int so;
	printf("\nnhap vao so nguyen khong am < 1000 : ");
	scanf_s("%d", &so);

	if (so > 1000 || so < 0)
	{
		printf("\nvui long nhap so dung qui dinh");
	}
	else
	{
		int  tram, chuc, donvi;
		tram = so / 100;
		chuc = so % 100 / 10;
		donvi = so % 100 % 10;

		
			switch (tram)
			{
			case 1:
			{printf("Mot Tram "); }
			break;
			case 2:
			{printf("Hai Tram "); }
			break;
			case 3:
			{printf("Ba Tram "); }
			break;
			case 4:
			{printf("Bon Tram "); }
			break;
			case 5:
			{printf("Nam Tram "); }
			break;
			case 6:
			{printf("Sau Tram "); }
			break;
			case 7:
			{printf("Bay Tram "); }
			break;
			case 8:
			{printf("Tam Tram "); }
			break;
			case 9:
			{printf("Chin Tram "); }
			break;
			}

			switch (chuc)
			{
			case 0:
			{
				if (tram != 0 && donvi != 0 )
				{
					printf("Le ");
				}
			}
			break;
			case 1:
			{printf("Muoi "); }
			break;
			case 2:
			{printf("Hai Muoi "); }
			break;
			case 3:
			{printf("Ba Muoi "); }
			break;
			case 4:
			{printf("Bon Muoi "); }
			break;
			case 5:
			{printf("Nam Muoi "); }
			break;
			case 6:
			{printf("Sau Muoi "); }
			break;
			case 7:
			{printf("Bay Muoi "); }
			break;
			case 8:
			{printf("Tam Muoi "); }
			break;
			case 9:
			{printf("Chin Muoi "); }
			break;
			}

			switch (donvi)
			{	
			case 0:
			{
				if (tram == 0 && chuc == 0)
				{
					printf("Khong ");
				}
			}
			break;
			case 1:
			{printf("Mot "); }
			break;
			case 2:
			{printf("Hai "); }
			break;
			case 3:
			{printf("Ba "); }
			break;
			case 4:
			{printf("Bon "); }
			break;
			case 5:
			{
				if(chuc==0)
				{
					printf("Nam ");
				}
				else if (chuc != 0)
				{
					printf("Lam "); 
				}
			}
			break;
			case 6:
			{printf("Sau "); }
			break;
			case 7:
			{printf("Bay "); }
			break;
			case 8:
			{printf("Tam "); }
			break;
			case 9:
			{printf("Chin "); }
			break;
			}
	}
	return 0;
}