In Python, you can read input from the console using the input() function and display output using the print() function.
# Reading input from the user
name = input("Enter your name: ")
age = int(input("Enter your age: "))
# Displaying output
print("Hello,", name)
print("Your age is", age)
+ (Addition)- (Subtraction)* (Multiplication)/ (Division)// (Floor Division)% (Modulus)** (Exponentiation)and (Logical AND)or (Logical OR)not (Logical NOT)> (greater than)>= (greater than or equal to)< (less than)<= (less than or equal to)== (equal to) [Note: = is used for assignment, == is used for comparison]# Arithmetic Operators
num1 = 10
num2 = 3
# Addition
addition = num1 + num2 # Output: 13
# Subtraction
subtraction = num1 - num2 # Output: 7
# Multiplication
multiplication = num1 * num2 # Output: 30
# Division
division = num1 / num2 # Output: 3.3333333333333335
# Floor Division
floor_division = num1 // num2 # Output: 3
# Modulus
modulus = num1 % num2 # Output: 1
# Exponentiation
exponentiation = num1 ** num2 # Output: 1000
# Logical Operators
num1 = 10
num2 = 20
# Logical AND
logical_and = (num1 > 0) and (num2 < 30) # Output: True
# Logical OR
logical_or = (num1 > 0) or (num2 > 30) # Output: True
# Logical NOT
logical_not = not (num1 > 0) # Output: False
Problem 1: Perform Arithmetic Operations
Fill in the code to perform arithmetic operations on two numbers. Use the given variables num1 and num2 and print the results of addition, subtraction, multiplication, division, and floor division. Floor division (//) returns the quotient without the remainder.
num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))
# Perform arithmetic operations
addition = # Fill in the code here
subtraction = # Fill in the code here
multiplication = # Fill in the code here
division = # Fill in the code here
floor_division = # Fill in the code here
print("Addition:", addition)
print("Subtraction:", subtraction)
print("Multiplication:", multiplication)
print("Division:", division)
print("Floor Division:", floor_division)
Problem 2: Calculate Area of a Rectangle
Fill in the code to calculate the area of a rectangle. Use the given variables length and width and print the area.
length = float(input("Enter the length of the rectangle: "))
width = float(input("Enter the width of the rectangle: "))
# Calculate the area of the rectangle
area = # Fill in the code here
print("Area of the rectangle:", area)
Problem 3: Calculate Area of a Circle
Fill in the code to calculate the area of a circle. Use the given variable radius and print the area. Use math.pi for the value of pi.
import math
radius = float(input("Enter the radius of the circle: "))
# Calculate the area of the circle
area = # Fill in the code here
print("Area of the circle:", area)
Problem 4: Calculate Compound Interest
Fill in the code to calculate the compound interest. Use the given variables principal, rate, time, and n (number of times interest applied per time period) and print the compound interest.
principal = float(input("Enter the principal amount: "))
rate = float(input("Enter the annual interest rate (in decimal): "))
time = float(input("Enter the time period (in years): "))
n = float(input("Enter the number of times interest is compounded per year: "))
# Calculate the compound interest
amount = # Fill in the code here
compound_interest = # Fill in the code here
print("Amount:", amount)
print("Compound interest:", compound_interest)
Problem 5: Check if a Number is Positive or Negative
Fill in the code to check if a number is positive, negative, or zero. Use the given variable number and print the result.
number = float(input("Enter a number: "))
# Check if the number is positive, negative, or zero
is_positive = # Fill in the code here
is_negative = # Fill in the code here
if is_positive:
print(f"{number} is positive.")
elif is_negative:
print(f"{number} is negative.")
else:
print(f"{number} is zero.")
Problem 6: Coin change calculator
Calculate the minimum number of coins of each denomination needed to have at least X cents (quarters: 25 cents, dimes: 10 cents, nickels: 5 cents, and pennies: 1 cent)
X = float(input("Enter change value in cents: "))
# Check how many minimum coins of each denomination is needed individually to make the change
quarters = # Fill in the code here
dimes = # Fill in the code here
nickels = # Fill in the code here
pennies = # Fill in the code here
print(f"Minimum quarters needed for {X} cents: {quarters}")
print(f"Minimum dimes needed for {X} cents: {dimes}")
print(f"Minimum nickels needed for {X} cents: {nickels}")
print(f"Minimum pennies needed for {X} cents: {pennies}")
Problem 7: Calculate the letter grade for given marks
Calculate the letter grade for a given percentage of marks. The grading system is as follows:
marks = float(input("Enter the percentage of marks: "))
grade = ""
# Calculate the letter grade based on the marks, replace the ... with appropriate conditions
if ...:
grade = "A"
elif ...:
grade = "A-"
elif ...:
grade = "B"
elif ...:
grade = "B-"
elif ...:
grade = "C"
elif ...:
grade = "D"
elif ...:
grade = "E"
elif ...:
grade = "F"
else:
grade = "Invalid"
if grade != "Invalid":
print(f"Grade for {marks}%: {grade}")
else:
print("Invalid percentage entered.")
Problem 8: Swap three numbers
Swap the values of three variables a, b, and c to b, c, and a respectively. For example, if initially a = 11, b = 21, c = 31, after swapping, a = 21, b = 31, c = 11 must hold.
Hint: You can use temporary variables to store the values during swapping.
a = input("Enter the first number: ")
b = input("Enter the second number: ")
c = input("Enter the third number: ")
# Write the code to swap the values of a, b, and c
print(f"After swapping, a = {a}, b = {b}, c = {c}")