数字金字塔

#include <iostream>
#include <time.h>
using namespace std;
/*每个数字占三个位置，如果是一位数前面有两空格，两位数前面就一个空格，在第你 n 行中，有 （total-n）*3 个前导空格 */
int main()
{

    int number;
    cin >> number;
    while( number < 1 || number > 14 )
    {
        cout << "You must enter 1 to 14 number!" << endl;
        cin >> number;
    }

    for(int row = 1; row <= number; ++row )
    {
        for(int space = 1; space <= number - row; ++space)
            cout << "   ";
        for(int line = row; line >=1; --line)
            cout << ( line >= 10 ? " " : "  " ) << line;
        for (int line2 = 2;line2 <= row; ++line2)
            cout << ( line2 >= 10 ? " " : "  " ) << line2;
        cout << endl;
    }

    system("pause");

    return 0;
}