#
#
#                             Tracing Problems
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#
#  Note: To check your answers place the code in a Python program and execute.
#
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#1.  What will be the printed value of total_1 after executing the following?

total_1  =  10  +  23  /  10  *  3   +   5  - 10
print total_1

 
 
#2.  What will be the printed value of total_2 after executing the following?

total_2  =  10  +  23  /  10.0  *  3   +   5  - 10
print total_2



#3.  What will be the printed value of total_3 after executing the following?

a = 3
b = 5
c = 1.5
d = 2

total_3  =  (a +  b)  *  (c *  (b   %   d  - a))
print total_3



#4.  What is printed by the following loop?  

for x in range (3,15):
  print "|" ,  x ,
            
    

#5.  How many "x" characters will be displayed if f1(1,20) is executed?  

def f1(begin, end):            
  for x in range (begin, end + 1):
    if x > 5: 
      print "x" ,
  print  

 

#6.  What will be printed by the following loop if list = [1,3,5,7,9,11,13,15]?

def f2(list):  
  for  x in (list):
    print  "|" , x * 2 ,
  print "|"
             


#7.  What is printed when function f3 is executed?

def f3():
  x = 1
  y = 5
  sum1 = 0
  sum2 = 0
  
  for z in range (x, y+1):
    sum1 =  z  + 2
    sum2 =  sum2 + sum1
  
  print  " sum1  =  " , sum1  , "   sum2 =  "  ,  sum2



#8.  What is printed by f4(m) if m = [[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15],[16,17,18,19,20]]

def f4(matrix):
  print "------------------------------"
  for row in range(0,len(matrix)):
    for col in range(0,len(matrix[row])):
      print matrix[row][col] ,
    print
  print "------------------------------"


#9.  What is printed by f5(m,2) if m = [[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15],[16,17,18,19,20]]

def f5(matrix, factor):

  f4(matrix)
  for row in range(0,len(matrix)):
    for col in range(0,len(matrix[row])):
      matrix[row][col] = matrix[row][col]  * factor
  f4(matrix)


      
#10.  Using following function, execute the code that follows.

def f6(a, b):
  a  =  a + 2 * b
  b  =  a * b
  print "a = " , a  , " b = " , b  


#  now execute the following     
#  >>>  x = 2
#  >>>  y = 4
#  >>>  f6(x, y)
#  >>>  print "x = ", x , " y  = " , y