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Formatted printing
Strings and Regular Expressions example from a Well House Consultants training course
More on Strings and Regular Expressions [link]
Source code: d4_6 Module: R109
# Formatted printing in Ruby - printf sprintf and %
gift = 1000.0 # --------- plain print - just output the data for kids in 1..15 egets = gift / kids print "With #{kids} children, each would get #{egets} pounds\n"; end # ---------- printf - formatted print; more flexible # with %....letter we're telling printf that we want to fill something in. # %8.2f - a float, 8 characters wide, of which 2 are after the decimal place for kids in 1..15 egets = gift / kids printf("With %2d children, each would get %8.2f pounds\n",kids,egets) end # ----------- sprintf - more flexible and we can do other things after formatting flout = File.new "gerald.txt","w" for kids in 1..15 egets = gift / kids stuff = sprintf("With %2d kiddos, each would get %8.2f pounds\n",kids,egets) stuff = ">> " + stuff flout.write stuff end flout.close __END__ Sample Output -bash-3.2$ ruby d4_6 With 1 children, each would get 1000.0 pounds With 2 children, each would get 500.0 pounds With 3 children, each would get 333.3333333333333 pounds With 4 children, each would get 250.0 pounds With 5 children, each would get 200.0 pounds With 6 children, each would get 166.66666666666666 pounds With 7 children, each would get 142.85714285714286 pounds With 8 children, each would get 125.0 pounds With 9 children, each would get 111.11111111111111 pounds With 10 children, each would get 100.0 pounds With 11 children, each would get 90.9090909090909 pounds With 12 children, each would get 83.33333333333333 pounds With 13 children, each would get 76.92307692307692 pounds With 14 children, each would get 71.42857142857143 pounds With 15 children, each would get 66.66666666666667 pounds With 1 children, each would get 1000.00 pounds With 2 children, each would get 500.00 pounds With 3 children, each would get 333.33 pounds With 4 children, each would get 250.00 pounds With 5 children, each would get 200.00 pounds With 6 children, each would get 166.67 pounds With 7 children, each would get 142.86 pounds With 8 children, each would get 125.00 pounds With 9 children, each would get 111.11 pounds With 10 children, each would get 100.00 pounds With 11 children, each would get 90.91 pounds With 12 children, each would get 83.33 pounds With 13 children, each would get 76.92 pounds With 14 children, each would get 71.43 pounds With 15 children, each would get 66.67 pounds -bash-3.2$ Learn about this subject
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