CF1B Spreadsheets

思路：

进制转换。

scanf，sscanf正则输入http://blog.csdn.net/tujiaw/article/details/6139896。

实现：

#include <iostream>
#include <cstdio>
using namespace std;

void g(int x)
{
    if (x) g((x - 1) / 26), putchar('A' + (x - 1) % 26);
}

char s[100];
int main()
{
    int n, x, y;
    scanf("%d%*c", &n);
    while (n--)
    {
        gets(s);
        if (sscanf(s, "%*c%d%*c%d", &x, &y) == 2)
        {
            g(y);
            printf("%d
", x);
        }
        else
        {
            int p = 0;
            int i = 0;
            while (s[i] >= 'A' && s[i] <= 'Z') p = p * 26 + s[i] - 'A' + 1, i++;
            printf("R%sC%d
", &s[i], p);
        }
    }
    return 0;
}