程序代码：

#include<stdio.h>
#include<string.h>

int two_to_ten(char *p,int n)
{
    int sum = 0;
    for(int i = 0;i<n;i++)
    {
        sum *= 2 ;
        sum += p[i] - '0';
    }
    return sum;
}


void ten_to_any(int n, int change,char * buf)
{
    char bbq[128] = {0};
    int count =0 ;
    while(1)
    {
        bbq[count] = n % change ;
        count++;
        n=n/change;
        
        if(bbq[count] >= 0 && bbq[count] <= 9)
        {
            bbq[count] = bbq[count] +'0';
        }
        else 
            bbq[count] = bbq[count] + 'A'-10;
        if(n==0) break;
    }
    for(int i =0;i<count;i++)
        buf[i]=bbq[count-i-1];
}

int main()
{
    char buf[128]={0};
    printf("Please input a two_:\n");
    gets(buf);
    int n = two_to_ten(buf,strlen(buf));    
    printf("转换的十进制为%d\n",n);

    char buf1[128] = {0};
    int x = 0;
    printf("请输入要转换的进制:\n");
    scanf("%d",&x);
    ten_to_any(n,x,buf1);
    puts(buf1);


    return 0;
}