Answer / vivek s

{
int n;
printf("\n Enter The Number\n");
scanf("%d",&n);
if(n>3 && n!=5 && n!=7)
if(n%2!=0)
if(n%3!=0)
if(n%5!=0)
if(n%7!=0)
printf("\n\n %d is a prime number",n);
else
printf("\n\n %d is not a prime number",n);
else
printf("\n\n %d is not a prime number",n);
else
printf("\n\n %d is not a prime number",n);
else
printf("\n\n %d is not a prime number",n);
else
printf("\n\n %d is a prime number",n);

getch();
}

Answer / harpreet dhillon

#include<stdio.h> \\harpreetdhillon7@gmail.com
#include<conio.h>
void main()
{
int i,n;
clrscr();
printf("enter any number which you want to check");
scanf("%d",&n);
for(i=2;i<=n-1;i++)
{
if(n%i==0)
{
printf("not a prime number\n");
break;
}
else
{
printf("prime number\n");
break;
}
}

Answer / azka sumbel

namespace prime_381
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int a;
int result;
int i, j;

private void button1_Click(object sender, EventArgs
e)
{

a = Convert.ToInt32(textBox1.Text);
prime();
textBox1.Clear();
textBox1.Focus();

}
int flag;
public void prime()
{
flag = 1;

for (i = 2; i <= a / 2; i++)
{
if (a % i == 0)
flag = 0;
}
if (flag == 1)
MessageBox.Show("Prime.");
else
MessageBox.Show("not Prime");
}
}
}

Answer / pran pratim

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int num,i,count=0;
cout<<"Enter the number::";
cin>>num;
for(i=2;i<=num/2;i++)
{
if(num%i==0)
{
count++;
break;
}
}
if(count==0)
{
cout<<"The number is Prime";
}
else
cout<<"The number is Composite";
getch();
}

Answer / paul

#include <stdio.h>
#include<stdlib.h>

#define TRUE 1
#define FALSE 0

int main()
{
int i,x,prime = TRUE;
printf(".:Modified Prime Program:.\n\n");
printf("Enter a number: ");
scanf("%d",&x);
printf("\nNUMBER\t REMARKS\n");
do
{
for(i=2;i<x;i++)
if(x%i==0)
{
prime=FALSE;
break;
}
if (prime=1 && (!(i<=x/2)))
printf("%d\t PRIME\n",x);
else
printf("%d\t COMPOSITE\n",x);
}
while (x-=1);
system ("pause");
return 0;
}

Answer / manish kumar

main()
{
int i,j=2,ch=0;
clrscr();
printf("\nENTER ANY NUMBER");
scanf("%d",&i);
while(j<=i/2)
{
if(i%j==0)
{
printf("%d IS NOT PRIME",i);
ch=1;
break;
}
else
{
j++;
}
}
if(ch==0)
{
printf("%d IS PRIME",i);
}
}

Answer / ashwini kumar nayak

#include<stdio.h>
#include<conio.h>

void main()
{
clrscr();
int c,i,n;
c=0;
printf("Enter the number");
scanf("%d",&n);
if(n==1)
printf("Number is the special number");
else
{
for(i=2;i<n;i++)
if (n%i==0)
{
c=1;break;
}
if(c!=1)
printf("prime");
else
printf ("not a prime");
}
getch();

}

Answer / ankish jaiswal

#include<stdio.h>
#include<conio.h>
int main()
{
int r,a,b,c=0;
printf("Enter the n value:");
scanf("%d",&r);
a=0;
while(a<=r)
{
b=1;c=0;
while(b<=a)
{
if(a%b==0)
c=c+1;
b++;
}
if(c==2)
printf("%d ",a);
a++;
}
getch();
return 0;
}

Answer / samson mugambi

#include<stdio.h>

int main()
{
int c,i,n;
counter=0;
scanf("%d",&a);
for(i=2;i>a;i++)
if (n%i==0)
{
c=1;break;
}
if(c!=1) ("prime");
else print ("not a prime");
}

Answer / love

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int num, i;
printf("enrer the value");
scanf("%d",&num);
i=2;
while(i<=num-1)
{
if(num%i==0)
{
printf("not a prime");
break;
}
i++;
}
if(i==num)
printf("prime");
getch();

}

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