Problem $3$

Complete the following $C$ program to read a positive integer at most $100$ from the

user. After that, the program prints a pattern following the rules as stated below:

a$)$ The number of rows and the number of columns equal to the user input.

b$)$ Each row$/$column is classified as either a special row$/$column or not.

c$)$ Suppose the leftmost column is the $1^2$ column. The $(1+2+$dots$+i{)}^m$ column in the

pattern is the is special column.

d$)$ Suppose the topmost row is the $1^{**}$ row. The odd rows are the special rows.

e$)$ A dot is printed where both row and column are not special.

f$)$ A hashtag is printed where either the row or the column is special.

g$)$ An at sign is printed where both the row and the column are special.

The following are $3$ sample runs, where the underlined italic characters are the

inputs from the user.