i = 4
d = 4.0
s = 'HackerRank '
# Declare second integer, double, and String variables.
int_i = None
double_d = None
string_s = None

# Read and save an integer, double, and String to your variables.
int_i = int(input('Enter an integer: '))
double_d = float(input('Enter a floating point number: '))
string_s = input(f'Enter a string: ')

# Print the sum of both integer variables on a new line.
sum_int = i + int_i
print(sum_int)

# Print the sum of the double variables on a new line.
double_sum = d + double_d
print(double_sum)

# Concatenate and print the String variables on a new line
new_string = s + string_s
print(new_string)

# The 's' variable above should be printed first.

