Difference between the two write statements

[rajabadsha]

Hi,
Can you please tell me how do you interpret the write statement below ( in C) as opposed to the other write statement,
write(29) ((um(i,k),k=1,ndz-nwt,2),i=nwt+1,ndx-nwt,2)
as opposed to
write(6,*) it," of ",nt," time steps",umax,esum

 

[xwb]

1) Note that fortran arrays start at 1 by default. To make life easier, add 1 to your array size initially

for (i = nwt + 1; i <= (ndx-nwt); i += 2)
{
   for (k = 1; k <= (ndz-nwt); n += 2)
      fwrite (&um[i][k], sizeof (um[0][0]), 1, channel29);
}

You could also do a fwrite of the whole array in one go.
2)

printf ("%d of %d time steps %d %d\n", it,nt,umax,esum