Csharp program to print first n prime numbers using while loop
Csharp program to print first n prime numbers using while loop
In this tutorial, we will discuss the concept of the Csharp program to print first n prime numbers using a while loop
In this post, we will learn how to print first n prime numbers using a while loop in C# programming language with Example program.
Prime number
The number that can be divided by 1 and itself. it is called a prime number
for Example 2,3,5,7,11,13…
Print first n prime numbers using while
Print first n Prime numbers – method 1
In this program, the user declares and initializes variables then it will print first n prime numbers, using the while loop in the C# language.
Program 1
using System;
namespace primeNumber
{
class first_N_Prime_Num
{
static void Main(string[]args)
{
int i=1,j=1,count=0,n=0;
Console.WriteLine("first 15 prime number ");
//read input from the user
while(n<15){//outter while
j=1;
count=0;
while(j<=i){//inner while
if(i%j==0)
count++;
j++;
}
if(count==2){
Console.Write(i+",");
n++;
}
i++;
}
}
}
}
When the above code is executed, it produces the following result
first 15 prime number 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,
Print first n Prime numbers – method 2
This program allows the user to enter a positive number for num then it will print first n prime numbers, using the while loop in the C# language.
Program 2
using System;
namespace primeNumber
{
class first_N_Prime_Num
{
static void Main(string[]args)
{
int i=1,j=1,num,count=0,n=0;
Console.WriteLine("first n prime number ");
Console.WriteLine("Enter the number");
num=int.Parse(Console.ReadLine());
//read input from the user
while(n<num){//outter while
j=1;
count=0;
while(j<=i){//inner while
if(i%j==0)
count++;
j++;
}
if(count==2){
Console.Write(i+",");
n++;
}
i++;
}
}
}
}
When the above code is executed, it produces the following result
first n prime number Enter the number 10 2,3,5,7,11,13,17,19,23,29,
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