C program to find the prime number between 3980 and 3990

/*To find the prime number between 3980 and 3990*/

#include<stdio.h>

#include<math.h>

void

main()

{

                int n,i,remainder,d;

                for(n=3980;n<=3990;n++)

                               

                { d= sqrt(n);

                                for(i=2;i<d;i++)

                                {

                                                remainder=n%i;

                                                if(remainder==0)

                                                {

                                                                goto label;

                                                }

                                }

                                printf("the number %d is prime\n",n);

label:;}

}

Result:

the number 3989 is prime

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