225 Demonstration program 10 INPUT A$ 20 FOR X=1 TO 5 30 Y=EVAL(A$) 40 PRINT Y 50 NEXT X >RUN ?5*X 5 10 15 20 25 This second program makes the computer act as a calculator. 5 REPEAT 10 INPUT B$ 20 PRINT EVAL B$ 30 UNTIL FALSE >RUN ?3+4 7 ?SIN (RAD (45)) 0.707106781 ?