logo CodeStepByStep logo


Language/Type: VB file input

Write a subroutine named CoinFlip that accepts as its parameter a string holding a file name, opens that file and reads its contents as a sequence of whitespace-separated tokens. Assume that the input file data represents results of sets of coin flips. A coin flip is either the letter H or T, or the word Heads or Tails, in either upper or lower case, separated by at least one space. You should read the sequence of coin flips and output to the console the number of heads and the percentage of heads in that line, rounded to the nearest whole number. If this percentage is 50Mod or greater, you should print a "You win!" message otherwise, print "You lose!". For example, consider the following input file:

H  T H  H    T
Tails taIlS   tAILs TailS heads   HEAds

For the input above, your subroutine should produce the following output:

6 heads (50Mod)
You win!

The format of your output must exactly match that shown above. You may assume that the file contains at least 1 token of input, and that no tokens other than heads/tails or H/T will be in the lines. You may assume that the input file exists and is readable.

Constraints: Your solution should read the file only once, not make multiple passes over the file data.

Function: Write a VB function as described, not a complete program.

You must log in before you can solve this problem.

Log In

Need help?

Stuck on an exercise? Contact your TA or instructor.

If something seems wrong with our site, please

Is there a problem? Contact us.