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Author: sandhyac0203

Basic Techniques of Programming - II.py

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+
+# coding: utf-8
+
+# It is assumed that a software developer is asked to write a Python program that can calculate and print out the diameter and circumference of a circle. The user enters data of the radius and its measurement unit(in, ft,cms or m) from the console
+
+# In[ ]:
+
+
+pi=3.14159
+radius=float(input("Enter radius: "))
+if (radius<0):
+    print("This is an error. Enter radius greater than 0")
+    radius=float(input("Enter radius: "))
+unit=input("Enter units: ") # unit: cms,inches,ft,m
+if(unit is not among (inches,ft,cms,m):
+   unit=input("Enter the correct unit from the list: ")
+   
+diameter= 2*radius
+circumference=diameter * pi
+print("Diameter: ",diameter,unit)
+print("Circumference: ",circumference,unit)
+
+
+# ### Calculating the diameter and circumference of a circle if a user makes mistakes while entering the radius again and again
+# 
+# The Program must repeatedly check the input until it gets the correct one-> The program uses LOOPS
+
+# In[1]:
+
+
+# while LOOP
+pi=3.14159
+radius=float(input("Enter radius: "))
+while(radius<0):
+    print("This is an error. Enter radius greater than 0")
+    radius=float(input("Enter radius: "))
+unit=input("Enter units: ") # unit: cms,inches,ft,m
+diameter= 2*radius
+circumference=diameter * pi
+print("Diameter: ",diameter,unit)
+print("Circumference: ",circumference,unit)
+
+
+# In[2]:
+
+
+# if-else
+numCredits = int(input("Enter # of credits then press Enter:"))
+
+if(numCredits >= 120):
+    readyToGraduate = True;
+else:
+    readyToGraduate = False;
+
+print(readyToGraduate)
+
+
+# In[3]:
+
+
+# for Loop
+language=["C","C++","Java","Python","Perl","Ruby","Scala"]
+
+for x in language:
+    print(x)
+
+
+# ### Break Statement 
+# Loop will be exited. The program flow will continue following the FOR LOOP, if there is any at all
+
+# In[4]:
+
+
+edibles=["ham","spam","eggs","nuts"]
+for food in edibles:
+    if food== "spam":
+        print("No More spam please!")
+        break
+    print("Great,delicious " + food)    
+else:
+          print("I'm so glad; No spam!")
+print("Finally, I finished stuffing myself")        
+          
+          
+          
+
+
+# In[6]:
+
+
+#when no break,FOR loop iterated through the whole sequence.The output is misleading since spam is in sequence
+edibles=["ham","spam","eggs","nuts"]
+for food in edibles:
+    print("No break in FOR loop statements")
+else:
+    print("I'm so glad; No spam!")
+    
+
+
+# In[9]:
+
+
+# when no else 
+edibles=["ham","spam","eggs","nuts"]
+spam=False
+
+for food in edibles:
+    if food== "spam":
+        spam=True
+        print("No More spam please!")
+        break
+    print("Great,delicious " + food) 
+    
+if(not spam):
+    print("I'm so glad; No spam!")
+    
+print("Finally, I finished stuffing myself")
+
+
+# In[10]:
+
+
+# no spam
+edibles=["ham","eggs","nuts"]
+spam=False
+
+for food in edibles:
+    if food== "spam":
+        spam= True
+        print("No More spam please!")
+        break
+    print("Great,delicious " + food)  
+    
+if(not spam):
+    print("I'm so glad; No spam!")
+    
+print("Finally, I finished stuffing myself")  
+
+
+# In[12]:
+
+
+# Break is to terminate a loop - completely get out of the loop, immediately
+numItems=0
+totalSales=0
+totalSoldItems=0
+
+while(numItems<totalSoldItems):
+    price=int(input("Enter the price of the next sold item: "))
+    totalSales=totalSales+price
+    if(totalSales>=1000000):
+        break;
+    numItems=numItems+1 
+print(totalSales)  
+
+
+# In[1]:
+
+
+edibles=["ham","spam","eggs","nuts"]
+spam=False
+
+for food in edibles:
+    if food== "spam":
+        spam=True
+        print("No More spam please!")
+        continue
+    print("Great,delicious " + food) 
+    
+if(not spam):
+    print("I'm so glad; No spam!")
+    
+print("Finally, I finished stuffing myself")  
+