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20 lines
455 B
QBasic
20 lines
455 B
QBasic
5 DEF FNA(Z)=30*EXP(-Z*Z/100)
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10 ' DEF FNA(Z)=SQR(900.01-Z*Z)*.9-2
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20 ' DEF FNA(Z)=30*(COS(Z/16))^2
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30 ' DEF FNA(Z)=30-30*SIN(Z/18)
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40 ' DEF FNA(Z)=30*EXP(-COS(Z/16))-30
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50 ' DEF FNA(Z)=30*SIN(Z/10)
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100 PRINT
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110 FOR X=-30 TO 30 STEP 1.5
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120 L=0
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130 Y1=5*INT(SQR(900-X*X)/5)
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140 FOR Y=Y1 TO -Y1 STEP -5
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150 Z=INT(25+FNA(SQR(X*X+Y*Y))-.7*Y)
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160 IF Z<=L THEN 190
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170 L=Z
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180 PRINT TAB(Z)"*";
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190 NEXT Y
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200 PRINT
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210 NEXTX
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300 END
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