void main()
                 {
                    int a;
                    clrscr();
                     printf("enter any number=");
                     scanf("%d",&a);
                     
                       if(a>0)
                         {
                           printf("given number is positive");
                         }
                        else
                         {
                           printf("given number is negative");
                         }
                   getch();
                 }



            output :
                    enter any number=-1
 
                     given number is negative