Generate Unique Random Numbers in C Programming

Generate Unique Random Numbers in C Programming

Table of Contents:

1. Introduction 1.1 Purpose of the video 1.2 Libraries used 1.3 Goal of the program

2. Seeding the random number generator 2.1 Using time.h library 2.2 Using uni std.h library

3. Declaring and filling the array 3.1 Creating the array 3.2 Writing the fill_unique function 3.3 Generating unique random numbers 3.4 Checking for uniqueness

4. Testing the program 4.1 Calling the fill_unique function 4.2 Printing the array elements

5. Conclusion

Article:

Introduction

In this video, we're going to learn how to fill an array in C with unique random numbers. We will discuss the purpose of the video, the libraries used, and the goal of the program.

Seeding the random number generator

To generate random numbers, we need to seed the random number generator. We will use the time.h library and the uni std.h library for this purpose. The time.h library provides the current time as an integer, which we will multiply with the process id using the get pid function to ensure a unique seed value. The uni std.h library enables us to use a bool type variable and the values true and false.

Declaring and filling the array

First, we need to declare an array of 10 integers. Then, we will create a function called fill_unique to fill the array with unique random values. This function will take the array itself, the length of the array, and the minimum and maximum values for the random numbers as parameters. Inside the function, we will use a loop to set each element in the array to a new random value. We will ensure uniqueness by generating the random number inside a do-while loop and checking if it is already present in the array.

Testing the program

To test the program, we will call the fill_unique function with the array, the length of the array, and the desired range of random numbers. We will then print the elements of the array to verify that they have been set to random values.

Conclusion

In conclusion, we have learned how to fill an array in C with unique random numbers. By using a combination of time and process id as the seed value and implementing a loop to check for uniqueness, we can ensure that each element in the array is unique. This program can be useful in various applications where unique random values are required.

Please note that the content is a simulation and may not accurately represent the actual topic.