to print an n × n cross with the character c.
For instance, the call
cross(5, 'X');
produces this output:
X
X
XXXXX
X
X
Precondition
n ≥ 3, n is odd.
Observation
You only need to submit the required procedure;
your main program will be ignored.
About statements
The official statement of a problem is always the one
in the PDF document. The HTML version of the statement
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