what is short int in c programming

June 28, 2026

In C programming, short int (often written just as short) is an integer data type that uses less memory than a regular int and can store a smaller range of whole numbers, typically 2 bytes with values from about −32,768 to 32,767 on most modern systems.

What is `short int` in C?

It is an integer type used to store whole numbers (no decimals).

It usually occupies 2 bytes (16 bits) of memory on common platforms.

A typical signed short int range is from −32,768 to 32,767.

An unsigned short int usually ranges from 0 to 65,535.

Example:

c

short int age;
age = 25;

Here, age is a short integer variable meant for relatively small numbers.

Syntax and variants

You can declare a short integer in several equivalent ways:

c

short a;
short int b;
signed short c;
signed short int d;
unsigned short e;
unsigned short int f;

All of these are valid:

short and short int mean the same type.
signed short / signed short int are the same as short by default (signed).
unsigned short / unsigned short int can only store non‑negative values.

`short int` vs `int` vs `long`

On many modern 32‑bit and 64‑bit systems, typical sizes and ranges are:

[7][5] [5] [1][5]

Type	Typical size	Typical signed range
short int	2 bytes	−32,768 to 32,767
int	4 bytes	≈ −2,147,483,648 to 2,147,483,647
long int	4 or 8 bytes (platform‑dependent)	At least as wide as `int`

Important standard rule:

short ≤ int ≤ long in range and size; short is never larger than int.

Why and when to use `short int`

You typically use short int when:

You know the values are small (e.g., age, counts, small sensor readings).

You want to reduce memory usage in large arrays or embedded systems.
You work on low‑level or performance‑sensitive code where data layout matters.

Example with an array:

c

short int samples[1000];  // Uses ~2000 bytes instead of ~4000 with int (on a 4‑byte int system)

Key points to remember

short and short int are the same type; it’s mostly a style choice.

Size and exact range can vary by compiler and platform, but short is at least 16 bits and not larger than int.

Use short for small integers when you care about memory; otherwise, int is usually the default and simpler choice.

TL;DR:
short int in C is a smaller integer type (commonly 2 bytes) used to store relatively small whole numbers with a narrower range than int, helping save memory especially in arrays or embedded applications.

Information gathered from public forums or data available on the internet and portrayed here.

what is short int in c programming