⌨️ Input & Output

name = input("Aapka naam: ")
print(f"Namaste, {name}!")

# Number input — int() lagana zaruri!
age = int(input("Aapki umar: "))
print(f"10 saal baad: {age + 10}")

# Float input
price = float(input("Price: "))
gst = price * 0.18
print(f"GST: {gst:.2f}")

# sep — separator badlo
print("2026","03","13", sep="-")  # 2026-03-13

# end — ending badlo
print("Loading", end="...")
print("Done!")  # Loading...Done!

# Thousands separator
salary = 1500000
print(f"Salary: {salary:,}")  # 1,500,000

print("Simple Calculator")
n1 = float(input("Pehla number: "))
op = input("Operator (+,-,*,/): ")
n2 = float(input("Doosra number: "))
if   op=="+": res=n1+n2
elif op=="-": res=n1-n2
elif op=="*": res=n1*n2
elif op=="/": res=n1/n2 if n2!=0 else "Error!"
print(f"{n1} {op} {n2} = {res}")

# Chapter 5: Input/Output — Advanced Practice
print("=== Input/Output Practice ===")

# Example 1: Basic usage
result = "Python mein Input/Output bahut powerful hai!"
print(result)

# Example 2: Real world use
data = ["Input/Output", "Python", "Hindi", "PythonHindi.in"]
for item in data:
    print(f"Item: {item}")

print("\nPractice complete! Great job! 🎉")

# Chapter 5: Input  Output — Advanced Examples
# Yeh code copy karo aur run karo!

# Example 1: Basic concept
print("=== Chapter 5: Input  Output ===")

# Example 2: List operations
items = ["Python", "Hindi", "Code", "Practice"]
for i, item in enumerate(items, 1):
    print(f"{i}. {item}")

# Example 3: Dictionary usage
chapter_info = {
    "number": 5,
    "title":  "Input  Output",
    "level":  "Beginner",
    "done":   False
}
for key, value in chapter_info.items():
    print(f"  {key:10}: {value}")

# Example 4: Function
def practice_summary(chapter, completed=False):
    status = "Complete ✅" if completed else "In Progress ⏳"
    return f"Chapter {chapter}: {status}"

print(practice_summary(5))
print(practice_summary(5, True))