#include <iostream>
using namespace std;
#include <string>
void test01()
{
string str1 = "abcdefgde";
int pos = str1.find("d");//find从左往右
if (pos == -1)
{
cout << "没找到" << endl;
}
else
{
cout << "找到" <<pos<< endl;
}
int pos2 = str1.rfind("d"); //rfind从右往左 查到第一个
cout << "找到" << pos2 << endl;
}
void test02()
{
//第二位起,三个字符替换1111是
string str1 = "abcdefgde";
str1.replace(1, 3, "1111");
cout << "str1= " << str1 << endl;
}
int main()
{
test01();
test02();
system("pause");
return 0;
}
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