Q.Example 5.15:
#function int() to convert string to integer

age = int( input("Enter your age:"))
Enter your age: 19
type(age)
<class 'int'>

String Input Type — First Encounter

Imagine you're writing a program that asks someone for their name. The user types "Ravi" and presses Enter. What just arrived inside your program? A string — a sequence of characters: 'R', 'a', 'v', 'i'.

A string input type is simply the mechanism by which a program reads a sequence of characters (letters, digits, spaces, punctuation) from the user, all at once, until the user presses Enter (or some other delimiter). The program stores that entire sequence as a single piece of data — a string.

The intuition

Think of a string as a word or sentence that the user types. Unlike a number input (which expects something like 42 and rejects hello), a string input happily accepts anything: "123", "hello world", "Ravi@2024", even " " (spaces). It does not try to interpret what was typed — it just records the characters exactly as given.

The precise statement

A string input type is a data type that accepts a sequence of zero or more characters from an input stream (typically the keyboard) and stores them as a string object. The input is delimited by a newline character (Enter) unless otherwise specified. The string can contain any printable characters, including digits and spaces, and is treated as literal text — not as a numeric value or any other type.

In code, it looks like this (Python example):

name = input("Enter your name: ")
# User types: Ravi
# name now holds the string "Ravi"

What makes it different from other input types

The critical distinction: string input preserves the exact characters typed. If you ask for age and the user types "twenty", a string input stores "twenty". An integer input would crash or reject it.

A common first confusion …