low, high = 0, 100
ans = abs(high - low) // 2
check=''
print("Please think of a number between 0 and 100!")

while True:
    print("Is your secret number " + str(ans) + "?")
    check = input("Enter 'h' to indicate the guess is too high. Enter 'l' to indicate the guess is too low. Enter 'c' to indicate I guessed correctly. ")
    if check == 'c':
        print("Game over. Your secret number was: " + str(ans))
        break
    elif check == 'h':
        high = ans
    elif check == 'l':
        low = ans
    else:
        print("Sorry, I did not understand your input.")
    ans = (high + low) // 2