大佬我没法去零，。。

Snake_e @ 2018-08-23 13:50:54

#include<iostream>
#include<cstring>
using namespace std;
string c1,b1;
int a[1000000];
int main()
{
    int l,le,k;
    cin>>c1;
    if(c1[0]=='-')
    {
        cout<<"-";
    }
    l=c1.length();
    for(int i=l-1;i>=0;i--)
    {
        a[i]=c1[l-1-i]-'0';
    }
    le=l;
    while(a[le]==0)
    {
        le--;
    }
    for(int i=0;i<=le-1;i++)
    {
        cout<<a[i];
    }
    }

by Lhc_fl @ 2018-08-23 13:55:57

最后一个花括号为什么不对齐啊。。。

by yangruiping @ 2018-08-23 14:11:48

#include <iostream>
using namespace std;
int main(){
    char f;
    int n,t,d,nf=0,u;
    cin>>n;
    if(n<0){
        f='-';
        t=0-n;
        cout<<f;
    }else{
        t=n;
    }
    if(n<10&&n>-10){
        cout<<n;
    }else{
        for(;t>0;){
            u=t%10;
            if(u!=0||nf!=0){
                cout<<u;
                nf=1;
            }
            t=t/10;
        }
    }
    return 0;
} 

by yangruiping @ 2018-08-23 14:12:09

AC码

by yangruiping @ 2018-08-23 14:17:50

@Snake_e

by Billy●Herrington @ 2018-09-08 10:46:41

#include <iostream>
using namespace std;
int ans;
int main()
{
    int n;
    cin >> n;
    while(n)
    {
        ans=ans*10+n%10;
        n/=10;
    }
    cout << ans;
    return 0;
}