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typedef Example with character array (define an alias to declare strings) in C

Here, we are going to learn how to define an alias for a character array i.e. typedef for character array with given maximum length of the string in C programming language?
By IncludeHelp Last updated : March 10, 2024

Defining an alias for a character array

Here, we have to define an alias for a character array with a given number of maximum characters length to read strings?

In the below-given program, we have defined two alias (typedefs) for character array and unsigned char:

Syntax

    typedef char CHRArray[MAXLEN];
    typedef unsigned char BYTE;

MAXLEN is also defined with 50 by using define statement #define MAXLEN 50.

Declaring typedef variables

CHRArray name;
CHRArray city;
BYTE age;

Explanation

CHRArray name will be considered as char name[50], CHRArray city will be considered as char city[50] and BYTE age will be considered as unsigned char age.

Note: unsigned char is able to store the value between 0 to 255 (i.e. one BYTE value).

C program to define an alias to declare strings

#include <stdio.h>
#include <string.h>

#define MAXLEN 50

typedef char CHRArray[MAXLEN];
typedef unsigned char BYTE;

int main()
{
	CHRArray name;
	CHRArray city;
	BYTE age;
	
	//assign values
	strcpy(name, "Amit Shukla");
	strcpy(city, "Gwalior, MP, India");
	age = 21;
	
	//print values
	printf("Name: %s\n", name);
	printf("city: %s\n", city);
	printf("Age : %u\n", age);
	
	return 0;
}

Output

Name: Amit Shukla
city: Gwalior, MP, India
Age : 21

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