Share a base conversion demo

#include<stdio.h>
#include<math.h>
#include<iostream>
void mune(void);
void TenToTwo(void);
void TenToEight(void);
void TenToSixteen(void);
void TwoToTen(void);
void EightToTen(void);
void SixteenToTen(void);
int main()
{
    
    
#if 1
	int n = 0;
	while (1)
	{
    
    
		printf("***********************。酸菜。*********************\n");
		mune();
		printf("***********************。酸菜。*********************\n");
		printf("请选择模式：");
		scanf_s("%d", &n);
		switch (n)
		{
    
    
		case 1:TenToTwo();
			break;
		case 2:TenToEight();
			break;
		case 3:TenToSixteen();
			break;
		case 4:TwoToTen();
			break;
		case 5:EightToTen();
			break;
		case 6:SixteenToTen();
			break;
		case 0:
			exit(0);
			break;
		default:
			printf("您的选择错误!!!\n");
		}
	}
#endif
	system("pause");
	return 0;
}

void mune()
{
    
    
	printf("******************************************************\n");
	printf("**                                                  **\n");
	printf("**                   进制转换                       **\n");
	printf("**                                                  **\n");
	printf("**              1、十进制转换二进制                 **\n");
	printf("**              2、十进制转换八进制                 **\n");
	printf("**              3、十进制转换十六进制               **\n");
	printf("**              4、二进制转换十进制                 **\n");
	printf("**              5、八进制转换十进制                 **\n");
	printf("**              6、十六进制转换十进制               **\n");
	printf("**              0、    退     出                    **\n");
	printf("**                                                  **\n");
	printf("******************************************************\n");
}

void TenToTwo()
{
    
    
	int i = 0;
	int a[2] = {
    
     0,1 };
	int b[20];
	int n = 0;
	int num = 0;
	int k = 0;
	printf("请输入一个十进制整数: ");  
	scanf_s("%d", &n);
	k = n;
	while (n>0)
	{
    
    

		b[i++] = a[n % 2];

		n = n / 2;
		/*num = n % 2;
		a[i] = num;
		n = n / 2;
		i++;*/
	}

	printf("十进制数%d转换成二进制数是：", k);
	for (i--; i >= 0; i--)           //将数组倒序输出
		printf("%d", b[i]);
	printf("\n");
}

void TenToEight(void)
{
    
    
  
	int i = 0, n = 0, k = 0;
	int a[8] = {
    
    0,1,2,3,4,5,6,7};
	int b[16];
	int num = 0;
	printf("请输入一个十进制整数: ");
	scanf_s("%d", &n);
	k = n;
	while (n > 0)
	{
    
    
   
		b[i++] = a[n % 8];

		n = n / 8;
		/*num = n % 8;
		a[i] = num;
		n = n / 8;
		i++;*/
	}

	printf("十进制数%d转换成八进制数是：", k);
	for (i--; i >= 0; i--)           //将数组倒序输出
		printf("%d", b[i]);
	printf("\n");
}
void TenToSixteen(void)
{
    
    
	char a[17] = "0123456789ABCDEF";
	char b[17];
	int i = 0;
	int n = 0;
	int num = 0;
	int k = 0;
	printf("请输入一个十进制整数: ");
	scanf_s("%d", &n);
	k = n;
	while (n!=0)
	{
    
    
		b[i++] = a[n % 16];
		n = n / 16;
	}
	printf("十进制数%d转换成十六进制数是：", k);
	for (i--; i >= 0; i--)           //将数组倒序输出
		printf("%c", b[i]);
	printf("\n");
}
void TwoToTen(void)
{
    
    
	int n=0, a=0;
	int sum = 0, i = 0, m;
	printf("输入一个二进制数: ");
	scanf_s("%d", &n);
	a = n;
	while (n != 0)
	{
    
    
		m = n % 10;
		n /= 10;
		sum += m * pow(2, i);
		++i;
	}
	printf("二进制数%d转换为十进制为%#d\n", a, sum);
	printf("\n");
}
void EightToTen(void)
{
    
    
	int n=0, a=0;
	int sum = 0, i = 0, m;
	printf("输入一个八进制数: ");
	scanf_s("%d", &n);
	a = n;
	while (n != 0)
	{
    
    
		m = n % 10;
		n /= 10;
		sum += m * pow(8,i);
		++i;
	}
	printf("八进制数%d转换为十进制为:%#d\n", a, sum);

	printf("\n");

}
void SixteenToTen(void)
{
    
    
	int num = 0;

	printf("输入一个十六进制数: ");

	scanf_s("%x", &num);

	printf("十六进制数%#x转换为十进制为:%#d\n", num, num);

	printf("\n");

}