记一个生成罗马数字的代码

int f[15]={1,4,5,9,10,40,50,90,100,400,500,900,1000},num[10];
int co[15][10]={{1},{1,1},{0,1},{1,0,1},{0,0,1},{0,0,1,1},{0,0,0,1},{0,0,1,0,1},{0,0,0,0,1},{0,0,0,0,1,1},{0,0,0,0,0,1},{0,0,0,0,1,0,1},{0,0,0,0,0,0,1}};
char ss[10] = {'I','V','X','L','C','D','M'};
void pre(int x)
{
    int i,j;
    for(i = 12 ; i >=0 ; i--)
    {
        if(x>=f[i])
        {
            while(x>=f[i])
            {
                x-=f[i];
                for(j = 0; j < 7 ; j++)
                {
                    num[j]+=co[i][j];
                }
            }
        }
    }
}