Here you will get the program for prime number in C.

A number that is just detachable by 1 or itself is called prime number.

For instance, 17 is prime, 6 isn’t prime, and so on.

**program**

```
#include<stdio.h>
int main()
{
int n,i,flag=1;
printf("Enter any number:");
scanf("%d",&n);
for(i=2;i<n/2;++i)
if(n%i==0)
{
flag=0;
break;
}
if(flag==1)
printf("\nThe given number is prime");
else
printf("\nThe given number is not prime");
return 0;
}
```

**Output**

```
Enter any number:15
The given number is not prime
```