Difference between macro and function

#define Message "Welcome to"
#define SITE "T4Tutorials.com"
#define YEAR 2020
#include <iostream>
using namespace std ;

int main()
{
	cout << Message << endl << SITE << endl;
	cout << endl << "YEAR is: " << YEAR ;
	cout << endl << "Next YEAR is: " << ((YEAR)+1) << endl ;

	return 0 ;
}

#define Message "Welcome to"

#define SITE "T4Tutorials.com"

#define YEAR 2020

#include <iostream>

using namespace std ;

int main()

{

cout << Message << endl << SITE << endl;

cout << endl << "YEAR is: " << YEAR ;

cout << endl << "Next YEAR is: " << ((YEAR)+1) << endl ;

return 0 ;

}

Output

Welcome to

T4Tutorials.com

YEAR is: 2020

Next YEAR is: 2021

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Difference between macro and function

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