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‘unsigned char’ - Declaration, Assign and Usage in C programming

Here, we are going to learn about unsigned char: why, where and how it is used? We are demonstrating use of unsigned char through an example in C programming language.
Submitted by IncludeHelp, on May 05, 2018

char is a data type in C programming language which can store value from -128 to +127. It generally used to store character values.

unsigned is a qualifier which is used to increase the values to be written in the memory blocks. For example - char can store values between -128 to +127, while an unsigned char can store value from 0 to 255 only.

unsigned store only positive values, its range starts from 0 to (MAX_VALUE*2)+1.

unsigned char is a character data type with larger range of the value than signed char.

Whenever we work with positive value between the range of 0 to 255, we can use unsigned char instead of short, int type of data type.

Declaration syntax:

unsigned char variable_name;

Declaration example:

unsigned char age;

Program to read and print the unsigned char value in C

#include <stdio.h>

int main()
{
	unsigned char age;
	
	printf("Enter age: ");
	scanf("%d",&age);
	
	printf("Input age is: %d\n",age);
	
	return 0;
}

Output

Enter age: 75 
Input age is: 75