Solver WRITE a number in scientific notation
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Algebra: Decimal numbers, power of 10, rounding
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==section input Write *[input a=12000000] in scientific notation. ==section solution perl my $a1 = sprintf( "%E", $a ); $a1 =~ s/0+E/E/; #$a1 =~ s/E\-/E/; if( $a1 =~ s/E\-/E\(\-/ ) { $a1 =~ s/$/\)/; } #print "a1=$a1\n\n\n"; $a1 =~ s/(\+|\-)0+/$1/; $a1 =~ s/E\+/E/; $a1 =~ s/E/\*10\^/; $b1 = $a1; $b1 =~ s/\*.*//; print "Answer: {{{$a=$a1}}}" ; ==section output b1 ==section check a=12 b1=1.2
