C++ 教程目录

复合类型

strtype4.cpp

来源: 复合类型

点击上方按钮打开代码编辑器和可视化视图

⚠️ 交互式运行提示

为了防止网页挂起,所有 cin 输入语句已被自动注释。请直接在代码编辑器中修改变量的值来进行测试。

书本配套例题

原始代码预览

// strtype4.cpp -- line input
#include <iostream>
#include <string>               // make string class available
#include <cstring>              // C-style string library
int main()
{
    using namespace std;
    char charr[20]; 
    string str;

    cout << "Length of string in charr before input: " 
         << strlen(charr) << endl;
    cout << "Length of string in str before input: "
         << str.size() << endl;
    cout << "Enter a line of text:\n";
    cin.getline(charr, 20);     // indicate maximum length
    cout << "You entered: " << charr << endl;
    cout << "Enter another line of text:\n";
    getline(cin, str);          // cin now an argument; no length specifier
    cout << "You entered: " << str << endl;
    cout << "Length of string in charr after input: " 
         << strlen(charr) << endl;
    cout << "Length of string in str after input: "
         << str.size() << endl;
    // cin.get();

    return 0; 
}
C++ Playground
运行结果 / 调试信息
等待编译...
Graph loading...
0 / 0