C# code to print 1 to n prime numbers using do-while loop
In this tutorial, we will discuss the concept of the C# code to print 1 to n prime numbers using do-while loop
In this post, we will learn how to print prime numbers between numbers of 1 to n using do-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 prime numbers between 1 to n
Prime numbers between 1 to n using do-while loop
This program allows the user to enter a positive number for num then it will print prime numbers between numbers of 1 to n, using do-while loop in the C# language.
Program 1
using System;
namespace primeNumber {
class first1toNPrimewhie { static void Main(string[]args) {
int num=25;
Console.WriteLine("print prime numbers between 1 to"+num);
bool isPrime=true;
var i=2;
do{
var j=2;
do{ if(i!=j && i%j==0){
isPrime=false;
break; }
j++; }
while(j<=num);
if(isPrime){
Console.Write(i+","); }
isPrime=true; i++; }
while(i<=num); Console.ReadKey(); }
} }
When the above code is executed, it produces the following result
print prime numbers between 1 to25 2,3,5,7,11,13,17,19,23,
Prime numbers between 1 to n using do-while loop- Entered by user
This program allows the user to enter a positive number for num then it will print prime numbers between numbers of 1 to n, using do-while loop in the C# language.
Program 2
// C# code to print 1 to n prime numbers using do-while loop
using System;
namespace primeNumber
{
class first1toNPrimewhie
{
static void Main(string[]args)
{
Console.WriteLine("print 1 to n prime number between 1 to n");
Console.WriteLine("Enter the number");
int num=int.Parse(Console.ReadLine());
//reading the input
bool isPrime=true;
var i=2;
do{
var j=2;
do{
if(i!=j && i%j==0){
isPrime=false;
break;
}
j++;
}while(j<=num);
if(isPrime){
Console.Write(i+",");
}
isPrime=true;
i++;
}while(i<=num);
Console.ReadKey();
}
}
}
When the above code is executed, it produces the following result
print 1 to n prime number between 1 to n Enter the number 15 2,3,5,7,11,13,
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