大佬求解 全WA为什么

P1307 [NOIP2011 普及组] 数字反转

AC有点难 @ 2017-01-26 09:48:52

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
const int maxn=17;
int main(){
    freopen("reverse.in","r",stdin);
    freopen("reverse.out","w",stdout);
    int n,k=1;
    cin>>n;
    int a[maxn];
    while(n>1){
        n/=10;
        k++;
    }
    for(int i=1;i<=k;i++) 
        a[i]=0;   
    for(int i=1;i<=k;i++){
        int x=pow(10,i);
        a[i]=n%x;
        n/=10;
    }
    for(int i=0;i<k;i++)
        a[i]=a[k-i];
    for(int i=0;i<k;i++)
        cout<<a[i];
    fclose(stdin);fclose(stdout);    
}

by 命鱼—逗比酒 @ 2017-01-28 11:13:51

#include <iostream>
#include<cstdio>
#include<iomanip>
#include<cstring>
using namespace std;
int main()
{
    int a,i=0;
    cin>>a;
    while(a!=0)
    {
         i=i*10+a%10;a/=10;
    }
    cout<<i;
    return 0;     
}
|