constructor @ 2017-09-09 18:19:21
#include<iostream>
#include<string>
using namespace std;
int main()
{
string str;
cin>>str;
int i=str.length()-1;
if(str[0]=='-'){cout<<"-";i--;}
for(;str[i]=='0';i--);
for(;i>=0;i--)
{
if(str[i]!='-')cout<<str[i];
}
return 0;
}
//九十分,为什么?
by jiaowohaoge @ 2017-09-12 13:27:20
#include<iostream>
#include<string>
using namespace std;
int main()
{
string s;
cin>>s;
int l=0;
int k=s.length()-1;
if (s[0]=='0') cout<<s;
else {
if (s[0]=='-') {
cout<<s[0];
l=1;}
while ((k>0)&&(s[k]=='0')){
k--;
}
for (int i=k;i>=l;i--)
{
if (((s[i]>='0')&&(s[i]<='9')))cout<<s[i];
}
}
return 0;
}
我们方法差不多,你看看
by jiaowohaoge @ 2017-09-12 13:28:06
if(str[0]=='-'){cout<<"-";i--;}
这里不是 i--