//使用擦除成员函数来截断字符串
#include <string>
#include <algorithm>
#include <iostream>

int main() {
	using namespace std;

	string strSample("Hello String! Wake up to a beautiful day!");
	cout << "The original sample string is: " << endl;
	cout << strSample << endl << endl;

	// Delete characters from the string given position and count
	cout << "Truncating the second sentence: " << endl;
	strSample.erase(13, 28);
	cout << strSample << endl << endl;

	// Find a character 'S' in the string using STL find algorithm
	string::iterator iCharS = find(strSample.begin(), strSample.end(), 'S');

	// If character found, 'erase' to deletes a character
	cout << "Erasing character 'S' from the sample string:" << endl;
	if (iCharS != strSample.end())
		strSample.erase(iCharS);

	cout << strSample << endl << endl;

	// Erase a range of characters using an overloaded version of erase()
	cout << "Erasing a range between begin() and end(): " << endl;
	strSample.erase(strSample.begin(), strSample.end());

	// Verify the length after the erase() operation above
	if (strSample.length() == 0)
		cout << "The string is empty" << endl;

	return 0;
}