Subtract Two Numbers in Python – Step by Step Guide

by tulsi@thodafunny.com

Subtracting two numbers is one of the most basic Python programs. This guide explains it professionally in English with small Hinglish notes for easy understanding.

Program

# Step 1: Ask the user to enter the first number
num1 = int(input("Enter first number: "))

# Step 2: Ask the user to enter the second number
num2 = int(input("Enter second number: "))

# Step 3: Subtract the numbers
difference = num1 - num2

# Step 4: Display the result
print("The difference is:", difference)

Run

Enter first number: 40
Enter second number: 15
The difference is: 25

Explanation

  1. Use input() to take input from the user.
    User se input lene ke liye input() use karein.
  2. Convert the input to integer using int().
    Input ko integer me convert karne ke liye int() use karein.
  3. Store the first number in num1.
    Pehla number num1 me store karein.
  4. Store the second number in num2.
    Dusra number num2 me store karein.
  5. Subtract num2 from num1 and store in difference.
    num1 me se num2 minus karke difference me store karein.
  6. Print the difference using print().
    Difference ko print() se screen par dikhaayein.

Algorithm – Step by Step

  1. Start the program.
    Program start karein.
  2. Prompt user to enter first number.
    User se pehla number maangkar store karein.
  3. Prompt user to enter second number.
    User se dusra number maangkar store karein.
  4. Subtract second number from first number.
    Pehla number me se dusra number minus karein.
  5. Display the difference.
    Difference ko screen par dikhaayein.
  6. End the program.
    Program ko end karein.

Flowchart

   ┌───────────┐
   │   Start   │
   └─────┬─────┘
         │
         ▼
 ┌─────────────────┐
 │ Input num1      │
 └─────┬───────────┘
       │
       ▼
 ┌─────────────────┐
 │ Input num2      │
 └─────┬───────────┘
       │
       ▼
 ┌───────────────────────┐
 │ difference = num1 - num2 │
 └─────┬─────────────────┘
       │
       ▼
 ┌───────────────────────┐
 │ Print difference      │
 └─────┬─────────────────┘
       │
       ▼
   ┌───────────┐
   │   End     │
   └───────────┘