poj3650

简单字符串处理，从规定位置pos开始查找，string::find(char *, pos);还要注意replace的用法string::replace(pos, length, char*);

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
using namespace std;

string replacement[7][2] =
{
{ "%", "%25" },
{ " ", "%20" },
{ "!", "%21" },
{ "$", "%24" },
{ "(", "%28" },
{ ")", "%29" },
{ "*", "%2a" } };

int main()
{
	//freopen("D:\\t.txt", "r", stdin);
	string st;
	while (getline(cin, st) && st != "#")
	{
		for (int i = 0; i < 7; i++)
		{
			int pos = st.find(replacement[i][0]);
			while (pos != string::npos)
			{
				st.replace(pos, 1, replacement[i][1]);
				pos += 2;
				pos = st.find(replacement[i][0], pos);
			}
		}
		cout << st << endl;
	}
	return 0;
}