### 4). Find Prime Number ( Method1 ) Example Program In C++

Simple C++ Example Programs

## Definition:

A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself.

### For example,

5 is prime, as only 1 and 5 divide it.

## Example Program

`/*  Example Program For Find Prime Number Using For Loop In C++`
`    little drops @ thiyagaraaj.com`

`    Coded By:THIYAGARAAJ MP             */`

`#include<iostream>`
`#include<conio.h>`
`#include<math.h>    // Math.h For sqrt function`

`using namespace std;`

`int main()`
`{`

`     // Variable Declaration`
`     int n;`

`     // Get Input Value`
`     cout<<"Enter the Number :";`
`     cin>>n;`

`      cout<<"List Of Prime Numbers Below "<<n<<endl;`

`     //for Loop Block For Find Prime Number`

`     for (int i=2; i<n; i++)`
`        for (int j=2; j*j<=i; j++)`
`        {`
`            if (i % j == 0)`
`                break;`
`            else if (j+1 > sqrt(i)) {`
`                cout << i << endl;`
`            }`
`        }`

`     // Wait For Output Screen`
`     getch();`
`     return 0;`
` }`

## Sample Output:

Enter the Number :50
List Of Prime Numbers Below 50
5
7
11
13
17
19
23
29
31
37
41
43
47