CMU 15-112: Fundamentals of Programming and Computer Science
Class Notes: User I/O (Input/Output)

1. Basic Console Output
2. Basic Console Input

1. Basic Console Output
   • Basic print function
     print("Carpe") print("diem")
   
   
   • Print on same line
     print("Carpe ", end="") print("diem")
   
   
   • Print multiple items
     print("Carpe", "diem") # Another Example: print() # blank line # Compute the hypotenuse of a right triangle a = 3 b = 4 c = ((a**2) + (b**2))**0.5 print("side a =", a) print("side b =", b) print("hypotenuse c =", c)
   
   
2. Basic Console Input
   • Input a string
     name = input("Enter your name: ") print("Your name is:", name)
   
   
   • Input a number (error!)
     x = input("Enter a number: ") print("One half of", x, "=", x/2) # Error!
   
   
   • Input a number with int()
     x = int(input("Enter a number: ")) print("One half of", x, "=", x/2)