# file: InClassAssignment2.py
# Here are the definitions for the following two functions presented:
# sumN(n) returns the sum of the first n natural numbers if n is a positive integer,
#         and -1 otherwise
# sumNSquares(n) returns the sum of squares of the first n natural numbers if n is a positive integer,
#         and -1 otherwise
#
# Program has main function that tests functions sumN(n) and sumNSquares(n)
#

def sumN(n):
    # put the code for this function here

def sumNSquares(n):
    # put the code for this function here

def main():
    print("Testing sumN(n) and sumNSquares(n).")

    # Test 1
    print("sumN(n) on n = -7: ", end='')
    if (sumN(-7) == -1):
        print("passed")
    else:
        print("failed")

    # Test 2
    print("sumNSquares(n) on n = -7: ", end='')
    if (sumNSquares(-7) == -1):
        print("passed")
    else:
        print("failed")        
    
    # Test 3
    print("sumN(n) on n = 1: ", end='')
    if (sumN(1) == 1):
        print("passed")
    else:
        print("failed")

    # Test 4
    print("sumNSquares(n) on n = 1: ", end='')
    if (sumNSquares(1) == 1):
        print("passed")
    else:
        print("failed")

    # Test 5
    print("sumN(n) on n = 2: ", end='')
    if (sumN(2) == 3):
        print("passed")
    else:
        print("failed")

    # Test 6
    print("sumNSquares(n) on n = 2: ", end='')
    if (sumNSquares(2) == 5):
        print("passed")
    else:
        print("failed")

    # Test 7
    print("sumN(n) on n = 10: ", end='')
    if (sumN(10) == 55):
        print("passed")
    else:
        print("failed")

    # Test 8
    print("sumNSquares(n) on n = 4: ", end='')
    if (sumNSquares(4) == 30):
        print("passed")
    else:
        print("failed") 
    

    
main()