That’s a problem of integer division!
int column = sizeof(result[0])/row;
should be
int column = 7 / 10;
and in integer division, 7/10==0.
What you want to do is divide the length of one row, eg. sizeof(result[0]) by the size of one element of that row, eg. sizeof(result[0][0]):
int column = sizeof(result[0])/sizeof(result[0][0]);