What is the output produced by the following code?

x = 1                        
if x > 3 :
   if x > 4 :                
         print ("A", end = ' ')
   else :                    
         print ("B", end = ' ')
elif x < 2:                  
   if (x != 0):
         print ("C", end = ' ')
print ("D")                  

What is the error in following code? Correct the code:

weather = 'raining'       
if weather = 'sunny' :
   print ("wear sunblock")
elif weather = "snow":    
   print ("going skiing") 
else :                    
   print (weather)        

Find the errors in the code given below and correct the code:

if n == 0
   print ("zero") 
elif : n == 1     
   print ("one")  
elif             
   n == 2:        
   print ("two") 
else n == 3:      
   print ("three")

What is following code doing? What would it print for input as 3?

n = int(input( "Enter an integer:" ))
if n < 1 :
  print ("invalid value")
else :
  for i in range(1, n + 1):
    print (i * i)