yeah u r ryt.....

On Sun, Oct 2, 2011 at 4:20 PM, ravi ojha <rbojha...@gmail.com> wrote:

> in the first loop the value of k shuld vary from 0 to j-i.
>
> On Oct 1, 7:26 am, rahul sharma <rahul23111...@gmail.com> wrote:
> > You are given two 32-bit numbers, N and M, and two bit positions, i and
> j.
> > Write a method to set all bits between i and j in N equal to M (e.g., M
> > becomes a substring of N located at i and starting at j).
> > EXAMPLE:
> > Input: N = 10000000000, M = 10101, i = 2, j = 6
> > Output: N = 10001010100
> > _
> >
> > #include<stdio.h>
> > #include<stdlib.h>
> > int main()
> > {
> >     int N,M,i,j;
> >     printf("Enter value  of N \n");
> >     scanf("%d",&N);
> >     fflush(stdin);
> >     printf("Enter value  of M \n");
> >     scanf("%d",&M);
> >     fflush(stdin);
> >     printf("Enter value  of i \n");
> >     scanf("%d",&i);
> >     fflush(stdin);
> >     printf("Enter value  of j \n");
> >     scanf("%d",&j);
> >     fflush(stdin);
> >     int a=0,k;
> >     for( k=0;k<j;k++)
> >     {
> >               a= a<<1;
> >               a=a|1;
> >     }
> >     for(k =0;k<i;k++)
> >     {
> >           a=a<<1;
> >     }
> >
> >     N = N &(~a);
> >     printf("value of N is %d",N);
> >     for(k=0;k<i;k++)
> >     M=M<<1;
> >     N=N|M;
> >     printf("value of N is %d",N);
> >     getchar();
> >
> > }
> >
> > isnt it give us wrong mask????
> >
> > say i=2;
> >
> > j=6;
> >
> > it gives mask as(i.e ~a)
> >
> > 1111111100000011
> >
> > but i think from 2 to 6 5 0's are needed????plz tell the above prog is
> > ok???or not???check by giving any input whose 7thy bit is set...thnx
> > in advance
>
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