Write a program to find out prime numbers between 1to500

#include<iostream.h>

#include<conio.h>

void main()

{

int n;

clrscr();

cout<<"Enter any one number:";

cin>>n;

prime(n);

getch();

}

int prime(int x)

{

for(I=2;I<x/2;I++)

{

if(x%I==0)

{

cout<<x<<"is not a primenumber";

return x;

}

cout<<x<<"is a primenumber";

return x;

}

}

#include<conio.h>

void main()

{

int n;

clrscr();

cout<<"Enter any one number:";

cin>>n;

prime(n);

getch();

}

int prime(int x)

{

for(I=2;I<x/2;I++)

{

if(x%I==0)

{

cout<<x<<"is not a primenumber";

return x;

}

cout<<x<<"is a primenumber";

return x;

}

}

Following is the code. Here you just have to enter the number "n" and then the program will find the prime numbers from 1 till n.

Main()

{

int n,I=1,j,c; // defining all variables

clrscr(); // clear screen

printf("Enter Number ");

scanf("%d",&n); //enter the number

printf("Prime Numbers Are Following from 1 to %d", &n);

//This loop is for checking the number

while( I <= n)

{

c = 0;

for(j=1;j<=I;j++)

{

if(I%j==0)

c++; // if number is not prime then c = 1.

}

if(c==0) // if the number is prime then show the number

printf("%d",I)

I++;

}

}

Main()

{

int n,I=1,j,c; // defining all variables

clrscr(); // clear screen

printf("Enter Number ");

scanf("%d",&n); //enter the number

printf("Prime Numbers Are Following from 1 to %d", &n);

//This loop is for checking the number

while( I <= n)

{

c = 0;

for(j=1;j<=I;j++)

{

if(I%j==0)

c++; // if number is not prime then c = 1.

}

if(c==0) // if the number is prime then show the number

printf("%d",I)

I++;

}

}

//program to generate prime numbers

#include

#include

void main()

{int prime_no,remainder,divider;

for(prime_no=2;prime_no

#include

#include

void main()

{int prime_no,remainder,divider;

for(prime_no=2;prime_no

#include

main()

{

int a,c=0,I,n;

printf("enter a no:");

scanf("%d",&a);

for(I=1;I

main()

{

int a,c=0,I,n;

printf("enter a no:");

scanf("%d",&a);

for(I=1;I

#include

main()

{

int n,I=1,j,c;

clrscr();

printf("Enter the range");

scanf("%d",&n);

printf("Prime Numbers are:");

while(I

main()

{

int n,I=1,j,c;

clrscr();

printf("Enter the range");

scanf("%d",&n);

printf("Prime Numbers are:");

while(I

Prime number of a student in class