技術標籤：C++基礎學習c++字串leetcode正則表示式

string中單個字元存取方式有兩種

程式碼如下：

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

//string 字元存取
void test01() {
	string str = "hello";

	cout << "str = " << str << endl;

	for (int i = 0; i < str.size(); i++) {
 

		cout << str[i];
	}
	cout << endl;

	for (int i = 0; i < str.size(); i++) {
		cout << str.at(i);
	}
	cout << endl;

	str[0] = 'x';
	cout << "str = " << str << endl;

	str.at(1) = 'x';
	cout << "str = " << str << endl;
 



}

int main() {
	test01();
	return 0;
}