C program for finding prime numbers

Hello Devs,

In this tutorial, we are going to learn C program for finding prime numbers.

Here is a well-commented example you can understand and analyze.

void main()
{
	int n,i,sam=0;
	printf("Enter a no:");
	scanf("%d",&n);
	for(i=2;i<=n/2;i++)
	{
	  if(n%i==0)
	    sam=1;
	}
	if(sam==1)
	  printf("\n%d is not a prime no.",n);
	else
	  printf("\n%d is a prime no.",n);
	  
}

I hope this example helps you.