Here is a simple program to ask the user to give a string and then the program will ask the user what letter to be counted in the given string. The program will count the number of occurrence of the given string using Ruby programming language.
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Sample Program Output
Program Listing
count_letter.rb
# count_letter.rb
# Author : Jake Rodriguez Pomperada,BSCS,MAED-IT
# Date : July 9, 2019 Tuesday 12:49 PM
# Address : Bacolod City, Negros Occidental
# Tools : Eclipse IDE and Ruby Version 2.6.3
# Location : Bacolod City, Negros Occidental
# Website : http://www.jakerpomperada.com
# Emails : jakerpomperada@gmail.com and jakerpomperada@yahoo.com
loop do
print "\n\n"
print "\t===== Count Letters in a String ====="
print "\n\n"
print "\tGive a String : "
str_val = gets.chomp
print "\n"
print "\tWhat letter to be count ? : "
letter_val = gets.chomp
display = str_val.downcase.count(letter_val)
display_str = str_val.upcase
display_letter = letter_val.upcase
print "\n"
print "\tThe given string is #{display_str}."
print "\n\n"
print "\tThe number of occurrence of the letter"
print " #{display_letter} is #{display}."
puts "\n\n";
print "\tDo you want to continue? (y/n) : "
answer = gets.chomp.downcase
if answer == "n"
print "\n\n";
print "\tEnd of Program";
print "\n\n";
break
end
end
