Chang'an(YY's string-模拟)

手速题

#include <bits/stdc++.h>
using namespace std;
#define For(i,n) for(int i=1;i<=n;i++)
#define Rep(i,n) for(int i=0;i<n ;i++)
#define MAXN (100000)

string s;

int main()
{
	//freopen("1.in.cpp","r",stdin);
	bool t=true;
	while (getline(cin,s))
		{
		int l=s.length();
		for (int i=0;i<l;i++)
			{
			if (t) {
				if (!isalpha(s[i]) && !(s[i]<='9' && s[i]>='0')) {printf("%c",s[i]);continue;
				}
				if (s[i]<='9' && s[i]>='0') {t=false;printf("%c",s[i]);continue;
				}
				s[i]=toupper(s[i]);
				printf("%c",s[i]);
				t=false;
				continue;
				}
			if (!t)
		    {
				if (s[i]=='.')
				{
					printf("%c",s[i]);t=true;
				}
				else printf("%c",tolower(s[i]));
			}
			}
		cout<<endl;
		}

	return 0;
}

Chang'an(YY's string-模拟)