pow works with double (floating point) values, not integers, and when you assign the result to an integer, it truncates. You will be better off, both in speed and correctness, to just use r*r*r instead of pow(r, 3). Don
On Aug 30, 1:06 am, Mohit Gupta <mohitgupta.n...@gmail.com> wrote: > *1.* > /* Print armstrong numbers from 1 to 500 */ > /*1st version of prgrm: I am using pow function*/ > #include<stdio.h> > #include<conio.h> > #include<math.h> > int main() > { > int num=1,temp,sum,r; > while(num<=500){ > sum=0; > temp=num; > while(temp){ > r=temp%10; > sum+=pow(r,3); > temp/=10; > } > if(sum==num) > printf("%d\n",num); > num++;} > > getch(); > return 0; > > } > > It prints : > 1 > 370 > 371 > 407 > > But it does not print 153 which is also armstrong number. WHY??? > > BUT if I change: pow(r,3) to r*r*r in code....then it prints: > 1 > 153 > 370 > 371 > 407 > > WHY 153 was not printed if i use pow() function??? -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.