1079 延迟的回文数

注意点

string里有个to_string()可以实现int转string

代码

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

bool is_Palindromic(string a){
	for(int i=0;i<a.size()/2;i++){
		if(a[i]!=a[a.size()-i-1]){
			return 0;
		}
	}
	return 1;
}
string reverse_diy(string a){
	string b=a;
	for(int i=0;i<a.size();i++){
		b[i]=a[a.size()-i-1];
	}
	return b;
}
string to_Palindromic(string a){
	return to_string(stoi(a)+stoi(reverse_diy(a)));
}
int main()
{
	string s;
	cin>>s;
	int cnt=0;
	while(is_Palindromic(s)==0){
		cout<<s<<" + "<<reverse_diy(s)<<" = ";
		s=to_Palindromic(s);
		cout<<s<<endl;
		cnt++;
		if(cnt==10&&is_Palindromic(s)==0){
			cout<<"Not found in 10 iterations.";
			return 0;
		}
	}
	cout<<s<<" is a palindromic number.";
	
	return 0;
}