A Strong Random Password Generator Using C/C++

A random password generator is software program or hardware device that takes input from a random or pseudo-random number generator and automatically generates a password. Random passwords can be generated manually, using simple sources of randomness such as dice or coins, or they can be generated using a computer software program.

Here we have a simple program by using it you can generate a strong password of any predefined length. As you increase the length of password, it becomes stronger.  

//Source Code:

#define _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>

#include <conio.h>

#include <stdlib.h>

#include <time.h>

int main()

{

     int counter = 0;

     srand(time(NULL));  // seeding function for random()

     char randChar;

     int  passwordLength;

           

printf("****A Random Password Generator****\n\n");

     printf("Type password Length: ");

     scanf("%d", &passwordLength);

     printf("\n\n");

     while (counter < passwordLength)

     {

           //Get a random char among 70 characters

           randChar = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@#$%^&*!"[rand() % 70];

           printf("%c", randChar);

           counter++;

     }

    

     printf("\n");

     _getch();

     return 0;

}

Output: