## Prime number – C Program

### Write a c program for print the prime number up to given number

Prime number is the number who divisible only by itself. The 2 is the minimum and first prime number.

In prime number series only 2 is even, all the rest of the prime number are odd.

The prime numbers are : 2 3 5 7 11 13 17 19………

Here is the example for print prime number up to inputted number. means we input any number and the result in display prime numbers up to that inputted number in c program.

```
#include<stdio.h>
#include<conio.h>
void main()
{
int n, i = 3, count, a;
printf("Enter the number for dispaly prime number :\n");
scanf("%d",&n);
if ( n >= 1 )
{
printf("The Prime numbers are :\n");
printf("2\n");
}
for (count = 2 ; count <= n ;)
{
for (a = 2 ; a <= i - 1 ; a++)
{
if (i%a == 0 )
break;
}
if (a == i)
{
printf("%d\n",i);
count++;
}
i++;
}
}
```

The prime number of given number c program out put is :

```
Enter the number for dispaly prime number :
9
The Prime numbers are :
2
3
5
7
11
13
17
19
23
```