Write a function that opens a file (input: filename), and prints the file line by line

def print_file(filename):
with open(filename, "r") as f:
for line in f:
print(line.strip())

print_file("example.txt") # replace example.txt with your filename

相关问题

Write a C++ program that implements flipping the contents of each line of a string in a text file and outputs the flipped result to another text file. Both the input file name and output file name are specified by the user.

Sure, here's a C++ program that implements flipping the contents of each line of a string in a text file and outputs the flipped result to another text file.

#include <iostream>
#include <fstream>
#include <string>
#include <algorithm>

using namespace std;

int main()
{
    string inputFileName, outputFileName;
    cout << "Enter input file name: ";
    cin >> inputFileName;
    cout << "Enter output file name: ";
    cin >> outputFileName;

    ifstream inputFile(inputFileName);
    if (!inputFile.is_open())
    {
        cout << "Failed to open input file!" << endl;
        return 1;
    }

    ofstream outputFile(outputFileName);
    if (!outputFile.is_open())
    {
        cout << "Failed to open output file!" << endl;
        return 1;
    }

    string line;
    while (getline(inputFile, line))
    {
        reverse(line.begin(), line.end());
        outputFile << line << endl;
    }

    inputFile.close();
    outputFile.close();

    cout << "File has been flipped and saved successfully!" << endl;

    return 0;
}

The program first prompts the user to enter the input file name and output file name. It then opens the input file and output file using `ifstream` and `ofstream`, respectively. If either file cannot be opened, the program reports an error and exits.

The program then reads each line from the input file using `getline`, reverses the line using `reverse`, and writes the reversed line to the output file using `outputFile << line << endl`. Finally, the program closes both files and reports success.

Note that this program assumes that the input file contains one line of text per line, and that each line ends with a newline character. If the input file does not conform to this format, the program may not work correctly.

Internal Commands: new: Creates a new session. open: Opens a session or the session dialog box. edit: Opens the Session Property dialog box for a session. list: Lists information of all available sessions. cd: Changes the current working directory. pwd: Shows the current working directory. set: Sets options. clear: Clears the screen/address/command history. alias: Assigns a string with a command. unalias: Removes entries from the list of aliases. help: Displays this help. '?' does the same. quit: Quits Local Shell. 'exit' does the same. ssh: Connects to a host using the SSH protocol. telnet: Connects to a host using the TELNET protocol. rlogin: Connects to a host using the RLOGIN protocol. sftp: Connects to a host to transfer files securely. ftp: Connects to a host to transfer files. scp: Transfer files using the SCP protocol. serial: Makes SERIAL connectin. disconnect: Closes connection of this session. reconnect: Reconnects this session. realcmd: Opens Windows CMD window. wsl: Opens wsl command window. powershell: Opens powershell command window. bash: Opens bash command window. ubuntu: Opens ubuntu command window. debian: Opens debian command window. kali: Opens kali command window. For more information, type 'help command' for each command. e.g. help telnet

这是一些本地shell（本地命令行界面）的内置命令。其中包括创建新会话、打开会话、编辑会话、列出所有可用会话的信息、更改当前工作目录、显示当前工作目录、设置选项、清除屏幕/地址/命令历史记录、分配命令的字符串、从别名列表中删除条目、显示帮助信息、退出本地shell等。此外，还包括使用SSH、TELNET、RLOGIN、SFTP、FTP、SCP等协议连接到主机或进行文件传输的命令，以及打开Windows CMD、WSL、PowerShell、Bash、Ubuntu、Debian、Kali等命令窗口的命令。如果需要更多信息，可以使用“help”命令加上相应的命令名来获取帮助信息，如“help telnet”。