def jumlah(a,b)
print a, " + ", b, " = ", a+b
puts
end

def kurang(a,b)
print a, " - ", b, " = ", a-b
puts
end

def kali(a,b)
print a, " x ", b, " = ", a*b
puts
end

def bagi(a,b)
print a, " : ", b, " = ", a.to_f/b.to_f
puts
end

puts
puts "----Program Kalkulator----"
puts
print "Masukkan angka pertama = "
a = gets.to_i
print "Masukkan angka kedua = "
b = gets.to_i
puts
puts "----Penjumlahan----"
puts
jumlah(a,b)
puts
puts "----Pengurangan----"
puts
kurang(a,b)
puts
puts "----Perkalian----"
puts
kali(a,b)
puts
puts "----Pembagian----"
puts
bagi(a,b)