INSTRUCTIONAL GRAPHICS PACKAGES TO BE USED WITH A LINE PRINTE R A .L . Furtad o A .A .B . Furtad o F .A . Messede r Departamento de Informatic a Pontificia Universidade Catolica do Rio de Janeir o Brasi l Introductio n It has been claimed that introductory courses o n programming, with an emphasis on problem-solving , should not be restricted to purely numerical applications . In LI] (see also =5]) a number of elementary graphics problems are proposed, to be a t. tacked by students using the UCSD Pascal implementation, assuming that the installation ha s the appropriate graphics equipment . Graphics ar e particularly relevant in the case of engineerin g students, being the basis for practical applications in the area of computer aided design . Unfortunately not all installations have graphic hardware . Perhaps even more frequent is the cas where the equipment is present but not in a scal sufficient to be made accessible to large classe of undergraduate students . s e e s 2 .2 . SUBROUTINE COLOR(C ) Defines as C the character to be employed in th e next lines to be drawn as the pen moves .
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