poj3077

这题需要进行许多次四舍五入，得到最终结果，四舍五入的方法是(int)(x + 0.5)

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

int main()
{
    //freopen("D:\\t.txt", "r", stdin);
    int t;
    scanf("%d", &t);
    while (t--)
    {
        int n, count = 0;
        scanf("%d", &n);
        double x = n;
        while (x >= 10)
        {
            x /= 10;
            x = (int)(x + 0.5);
            count++;
        }
        n = (int)x;
        for (int i = 0; i < count; i++)
            n *= 10;
        printf("%d\n", n);
    }
    return 0;
}