C++提高教程 STL -String查找和替换

# include<iostream>
# include<string>
using namespace std;
//查找
void test01()
{
	string str1 = "abcdefg";
	str1.find("df");
	int pos = str1.find("df");
	cout << "pos==" << pos << endl;
	//rfind
	int pos1 = str1.rfind("de");
	cout << "pos1==" << pos1 << endl;
	//rfind和find的区别
	//rfind从右往左查   find从左往右查

}
void test02()
{
	string str1 = "abcdefg";
	//从1号字符起 3个字符 替换为”1111“
	str1.replace(1,3,"1111");
	cout << "str1==" << str1 << endl;
	//rfind



}
int main()
{
	test02();
	system("pause");
	return 0;
}