C program to print hollow square or rectangle star pattern Example Input Enter number of rows: 5 Output ***** * * * * * * ***** /** * C program to print hollow square star pattern */ # include int main ( ) { int i , j , N ; /* Input number of rows from user */ printf ( "Enter number of rows: " ) ; scanf ( "%d" , & N ) ; /* Iterate over each row */ for ( i = 1 ; i <= N ; i ++ ) { /* Iterate over each column */ for ( j = 1 ; j <= N ; j ++ ) { if ( i == 1 || i == N || j == 1 || j == N ) { /* Print star for 1st, Nth row and column */ printf ( "*" ) ; } else { printf ( " " ) ; } } /* Move to the next line/row */ printf ( "\n" ) ; } return 0 ; }