Sine Name

Enter a string of up to 12 characters, and the program prints it over and over at the bottom of the screen, shifted left and right along a sine curve, and SCROLLs it up, so the text weaves up the screen. Graphics characters give op-art patterns. It runs until you press BREAK.

Change SIN in line 20 to COS for a cosine version. For an 8K ZX80 the article adds 37 PAUSE 30.

Published in Syntax August 1982 (Sine Name).

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Sine Name

Print any string in the form of a vertical sine wave.

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Source Code

   5 INPUT A$
  10 FOR A=0 TO 6.3 STEP .2
  20 LET Y=SIN A
  30 PRINT AT 21,(10*Y+10);A$
  35 SCROLL
  40 NEXT A
  50 GOTO 10

Note: Type-in program listings on this website use ZMAKEBAS notation for graphics characters.