
Addition Problems - by Paul C. Moews (1979)
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from: Programs for the Cosmac Elf Interpreters


The following program constructs simple addition problems using two randomly chosen numbers  
between 0 and 127. On entry to the program a problem is presented, e.g. 076 + 093 = ?. An 
answer is entered through the keyboard one digit at a time (i.e. 1, 6, 3) and when the last 
digit is entered 163 is displayed. A "C" flows the entered number if it is correct and an "E"  
if it is incorrect. In the case of an incorrect answer the correct answer is also shown. 
Another problem is given when any key is entered.

