接口十分简单,readline和addhistory:

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <readline/readline.h>

#include <readline/history.h>

int main()

{

    char* input, shell_prompt[100];

    // Configure readline to auto-complete paths when the tab key is hit.

    rl_bind_key('\t', rl_complete);

    for(;;) {

        // Create prompt string from user name and current working directory.

        snprintf(shell_prompt, sizeof(shell_prompt), "%s:%s $ ", getenv("USER"), getcwd(NULL, 1024));

        // Display prompt and read input (n.b. input must be freed after use)...

        input = readline(shell_prompt);

        // Check for EOF.

        if (!input)

            break;

        // Add input to history.

        add_history(input);

        // Do stuff...

        // Free input.

        free(input);

    }

}

g++ TestReadLine.cc -lreadline就能够了。