1. Generate Number
2. How To Generate Random Number In Dev C++ For Copy And Paste
3. How To Generate Random Number In Dev C 5.11
4. How To Generate Random Number In Dev C++ Version

Here we are generating a random number in range 0 to some value. (In this program the max value is 100). To perform this operation we are using the srand function. This is in the C library. In Project Setup stage for deploy, VS 2012 will be used. Express versions will work except the project setup for deployment. The app is a very simple random number generator with two buttons (Generator/Reset), 7 Labels for the display of the random numbers with a PictureBox.

C program to generate pseudo-random numbers using rand and random function (Turbo C compiler only). As the random numbers are generated by an algorithm used in a function they are pseudo-random, this is the reason that word pseudo is used. Function rand() returns a pseudo-random number between 0 and RAND_MAX. RAND_MAX is a constant which is platform dependent and equals the maximum value returned by rand function.

C programming code using rand

We use modulus operator in our program. If you evaluate a % b where a and b are integers then result will always be less than b for any set of values of a and b. For example
For a = 1243 and b = 100
a % b = 1243 % 100 = 43
For a = 99 and b = 100
a % b = 99 % 100 = 99
For a = 1000 and b = 100
a % b = 1000 % 100 = 0

In our program we print pseudo random numbers in range [0, 100]. So we calculate rand() % 100 which will return a number in [0, 99] so we add 1 to get the desired range.

int main(){
int c, n;

printf('Ten random numbers in [1,100]n');

for(c =1; c <=10; c++){
n =rand()%100+1;
printf('%dn', n);
}

return0;
}

If you rerun this program, you will get the same set of numbers. To get different numbers every time you can use: srand(unsigned int seed) function; here seed is an unsigned integer. So you will need a different value of seed every time you run the program for that you can use current time which will always be different so you will get a different set of numbers. By default, seed = 1 if you do not use srand function.

C programming code using random function (Turbo C compiler only)

Function randomize is used to initialize random number generator. If you don't use it, then you will get same random numbers each time you run the program.

int main()
{
int n, max, num, c;

printf('Enter the number of random numbers you wantn');
scanf('%d',&n);

printf('Enter the maximum value of random numbern');
scanf('%d',&max);

printf('%d random numbers from 0 to %d are:n', n, max);
randomize();

for(c =1; c <= n; c++)
{
num = random(max);
printf('%dn',num);
}

getch();
return0;
}

Tutorialsrack 15/11/2019C#Programs

In this article, we will learn how to generate Random Numbers using Random Class in C#. The Random class is used to create random numbers (Pseudo-random that is of course.), that reside in the 'System' Namespace.It is easy to use.

Here are the various examples for generating a random number in c#.

Example 1: Generate Random number using two arguments

Random Month Number is 5
Random Dice Number is 6
Random Card from Deck is 30

In the above example 1, we use the Random and Next() method with 2 arguments.

Argument 1: The 1st argument to the Next() method is the inclusive minimum number allowed.

Argument 2: And this argument is an exclusive maximum number. So it never occurs in the output—all numbers must be lower than this argument.

Unhandled Exception: System.ArgumentOutOfRangeException:

Generate Number

'minValue' cannot be greater than maxValue.

Parameter name: minValue

at System.Random.Next(Int32 minValue, Int32 maxValue)

at Program.Main()...

How To Generate Random Number In Dev C++ For Copy And Paste

Example 2: Generate Random Number using Static Random Class Instance

USING STATIC RANDOM: 2085493745

USING STATIC RANDOM: 910018266

USING STATIC RANDOM: 1056191625

USING STATIC RANDOM: 742393096

In the above example 2, we use static random class instances that improve programs. A method that uses this will still get good random numbers.

Example 3: Generate Random Number with a single parameter

Random Number using 1 argument: 26
Random Number using 1 argument: 34
Random Number using 1 argument: 17
Random Number using 1 argument: 20

How To Generate Random Number In Dev C 5.11

In the above example 3, it uses the Random and Next() method with single arguments.

How To Generate Random Number In Dev C++ Version

And this single argument uses the Next() method is the MaxValue which is an exclusive maximum number. So it never occurs in the output—all numbers must be lower than this argument.

Example 4: Repeated Number - Bad Example of Random Number Generation

Repeated Number: 1251196444
Repeated Number: 1251196444
Repeated Number: 1251196444
Repeated Number: 1251196444
Repeated Number: 1251196444
Repeated Number: 1251196444

In this example 4, this program generates a repeated number if called many times, so this is a bad example to use the random class to generate random numbers. So do not use this code in a real program.

I hope this article will help you to understand how to generate Random Numbers using Random Class in C#.

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