85. To find perfect numbers

 #include<stdio.h>

void main()

{

        int add,j,i,num,range;

        printf("To find perfect numbers \n");

        printf("Enter the lower limit : ");

        scanf("%d",&num);

        printf("Enter the upper limit : ");

        scanf("%d",&range);

 

        for(num;num<range;num++)

        {

 

        for(i=1,add=0;i<num;i++)

                if(num%i==0)

                        add=add+i;

        if(add==num)

                printf("%d  ",add);

 

        }

}