Situatie
In this article, we will discuss how to generate a random password of a given length consists of any characters.
Approach:
- The below-given program involves basic concepts like variables, data types, array, loop, etc.
- Follow the below steps to solve this problem:
- Take the length of the password and declare a character array of that length to store that password.
- Declare character array of all the capital letters, small letters, numbers, special characters.
- Now according to the program below, respective if-else gets executed and a random password gets generated.
Solutie
Pasi de urmat
// C program for the above approach
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
// Function to randomly generates password
// of length N
void randomPasswordGeneration(int N)
{
// Initialize counter
int i = 0;
int randomizer = 0;
// Seed the random-number generator
// with current time so that the
// numbers will be different every time
srand((unsigned int)(time(NULL)));
// Array of numbers
char numbers[] = “0123456789”;
// Array of small alphabets
char letter[] = “abcdefghijklmnoqprstuvwyzx”;
// Array of capital alphabets
char LETTER[] = “ABCDEFGHIJKLMNOQPRSTUYWVZX”;
// Array of all the special symbols
char symbols[] = “!@#$^&*?”;
// Stores the random password
char password[N];
// To select the randomizer
// inside the loop
randomizer = rand() % 4;
// Iterate over the range [0, N]
for (i = 0; i < N; i++) {
if (randomizer == 1) {
password[i] = numbers[rand() % 10];
randomizer = rand() % 4;
printf(“%c”, password[i]);
}
else if (randomizer == 2) {
password[i] = symbols[rand() % 8];
randomizer = rand() % 4;
printf(“%c”, password[i]);
}
else if (randomizer == 3) {
password[i] = LETTER[rand() % 26];
randomizer = rand() % 4;
printf(“%c”, password[i]);
}
else {
password[i] = letter[rand() % 26];
randomizer = rand() % 4;
printf(“%c”, password[i]);
}
}
}
// Driver Code
int main()
{
// Length of the password to
// be generated
int N = 10;
// Function Call
randomPasswordGeneration(N);
return 0;
}
Output:
51WAZMT?Z$
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