C primer plus plus :字符数组和字符串操作

//

//  main.cpp

//  myFourthChapter

//

//  Created by 炒饭 on 2019/4/14.

//  Copyright © 2019 炒饭. All rights reserved.

//

#include <iostream>

int main()

{

    // 字符串拼接和字符数组

    using namespace std;

    char charr1[20];

    char charr2[20]="jaguar";

    string str1;

    string str2 = "panther";

    //复制

    str1 = str2;

    strcpy(charr1,charr2);

    //拼接

    str1 += " paste";

    strcat(charr1," juice");

    //长度测量

    int len1 = str1.size();

    int len2 = strlen(charr1);

    //输出

    cout <<"the string " << str1 << "contains " << len1 <<" characters.\n";

    cout << "the string "<< charr1 << "contains "<< len2 <<" characters.\n";

    

    std::cout << "Hello, World!\n";

    return 0;

}

实验结果：

the string panther pastecontains 13 characters.

the string jaguar juicecontains 12 characters.

Hello, World!

Program ended with exit code: 0