Ubuntu terminal, read from console in C but don't print on the screen the text I read-CodePudding

I am using Ubuntu and C with VS Code, I want to read a text from stdin but after I am done reading I don't want the text I read to appear on the screen/terminal. Also I want to see the letters that I am reading but after I am done, I don't want to see the string on the screen.

I have used the code below but I am not getting the results I want as I want to see the characters that I am reading:

    /* get terminal attributes */
    struct termios termios;
    tcgetattr(STDIN_FILENO, &termios);

    /* disable echo */
    termios.c_lflag &= ~ECHO;
    tcsetattr(STDIN_FILENO, TCSAFLUSH, &termios);

CodePudding user response：

To rephrase your purpose, you want the input to be erased after you hit the Enter key.

You can do this using ANSI escape sequences. Here is an example:

#include <stdio.h>
#include <string.h>

int main() {
    char phrase[100];

    printf("Enter passphrase: ");
    if (!fgets(phrase, sizeof phrase, stdin))
        return 1;
    phrase[strcspn(phrase, "\n")] = '\0'; // strip the newline if any

    printf("\033[F\r");   // back up one line
    printf("Enter passphrase: "); // output the prompt on top of itself
    printf("\033[K\r\n"); // erase end of line, move to next line

    printf("\nPass phrase is %s\n", phrase);
    return 0;
}