C primer plus plus :字元數組和字元串操作

//

//  main.cpp

//  myFourthChapter

//

//  Created by 炒飯 on 2019/4/14.

//  Copyright © 2019 炒飯. All rights reserved.

//

#include <iostream>

int main()

{

    // 字元串拼接和字元數組

    using namespace std;

    char charr1[20];

    char charr2[20]="jaguar";

    string str1;

    string str2 = "panther";

    //複制

    str1 = str2;

    strcpy(charr1,charr2);

    //拼接

    str1 += " paste";

    strcat(charr1," juice");

    //長度測量

    int len1 = str1.size();

    int len2 = strlen(charr1);

    //輸出

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

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

    std::cout << "Hello, World!\n";

    return 0;

}

實驗結果：

the string panther pastecontains 13 characters.

the string jaguar juicecontains 12 characters.

Hello, World!

Program ended with exit code: 0