Is there any mechanism in C to take password from user, like we have in JAVA as password field

Question

Password, while typing should not be visible(stars should be visible instead of characters). Can it be done in C, as we have in JAVA.

Answer 1

Using a linux platform and terminal you must modify terminal behavior, disabling echoing and using non canonical mode

#include <termios.h>
#include <stdio.h>
#include <stdbool.h>

static struct termios oldPar, newPar;

void initTermios(bool echo) {
    tcgetattr(0, &oldPar);
    newPar = oldPar;
    newPar.c_lflag &= (tcflag_t)~ICANON;
    newPar.c_lflag &= echo ? (tcflag_t)ECHO : (tcflag_t)~ECHO;
    tcsetattr(0, TCSANOW, &newPar);
}

void resetTermios(void) {
    tcsetattr(0, TCSANOW, &oldPar);
}

char getch_(bool echo) {
    int ch;
    initTermios(echo);
    ch = getchar();
    resetTermios();
    return (char)ch;
}

char getch(void) {
    return getch_(false);
}

int main(void) {
    char c;
    char psw[16] = { 0 };
    size_t index = 0;
    printf("Insert password: ");
    do
    {
        c = getch();
        printf("*");

        psw[index++]= c;

    }
    while ((index < (sizeof(psw)-1)) && (c!='\n'));

    printf("\n\nPassword: %s\n", psw);

    return 0;
}