C++之string学习
2021-06-22 14:06
标签：use min int system 添加 \n 字符 学习 string C++之string学习 标签：use min int system 添加 \n 字符 学习 string 原文地址：https://www.cnblogs.com/weiyouqing/p/9678136.html#define _CRT_SECURE_NO_WARNINGS
#include
#include string>
using namespace std;
int main(int argc, char * argv[])
{
//string str2 = "xiaoliang";
//string str3("xiaohei", 5);
//string str4;
//string str5 = "";
string str("xiaohong");
str.append("love");
str.append("youddddd",3);//只取前三个字符
str.append("overy",1,4); //从offset =1 开始连续添加四个字符；
str.append(2,‘ ‘);//添加两个空格
const char * cstr = str.c_str(); //
printf("%s\n",cstr);
//考虑效率问题
string t1;
t1.resize(1024);
t1.clear();
t1.append("wei ");
t1.append("you ");
t1.append("qing");
string t2 = "hello";
t2[1] = ‘E‘;
t2.at(2) = ‘L‘;
string t4 = "yes";
if (t4 == "yes")
{
printf("相等\n");
}
string t5 = "Liming is doing homework";
int num1 = t5.rfind("i");
system("pause");
return 0;
}
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