poj 2196 Specialized Four-Digit Numbers

如果一个数字 十进制的各位数的和 == 十六进制的各位数的和 == 十二进制的各位数的和，则输出，从2992到9999

#include <cstdio>

int toDD(int n)
{
    int sum = 0;
    while(n)
    {
        sum += n%12;
        n /= 12;
    }
    return sum;
}

int splitSum(int n)
{
    int sum = 0;
    while(n)
    {
        sum += n%10;
        n /= 10;
    }
    return sum;
}

int toHex(int n)
{
    int sum = 0;
    while(n)
    {
        sum += n % 16;
        n /= 16;
    }
    return sum;
}

int main()
{
    int i,n;
    for(i = 2992; i < 10000; ++i)
    {
        if((n = splitSum(i)) == toHex(i) && n == toDD(i))
            printf("%d\n",i);
    }
    return 0;
}