Home » C programs » C preprocessor programs

Define a Macro to find total number of elements in C

Here, we are going to learn how to define a macro to find total number of elements in C programming language?
Submitted by IncludeHelp, on September 14, 2018

We have to define a Macro to find total number of elements in C programming language.

Macro Definition:

    #define ARRAY_LEN(ARRAY_NAME, TYPE)(sizeof(ARRAY_NAME)/sizeof(TYPE))

Program:

#include <stdio.h>

#define ARRAY_LEN(ARRAY_NAME, TYPE)(sizeof(ARRAY_NAME)/sizeof(TYPE))

int main()
{
	int iArr[10];
	float fArr[5];
	char cArr[50];
	
	printf("Total elements in iArr: %d\n", ARRAY_LEN(iArr, int));
	printf("Total elements in fArr: %d\n", ARRAY_LEN(fArr, float));
	printf("Total elements in cArr: %d\n", ARRAY_LEN(cArr, char));
	
	return 0;
}

Output

Total elements in iArr: 10
Total elements in fArr: 5
Total elements in cArr: 50




Comments and Discussions

Ad: Are you a blogger? Join our Blogging forum.



Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing » Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates

© https://www.includehelp.com some rights reserved.