Advanced Programming Techniques in C/

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Passing a Structure to a Function

Passing a Structure to a Function

Learn how to pass a structure and its elements to a function.

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Passing structure elements

We can pass elements of a structure either by value or by reference.

Passing structure elements by value

The basic syntax of passing elements of a structure by value is given below:

functionName (structVariable.memberName);

See the code given below!

C
# include <stdio.h>



void display ( char *, int, float ) ;



int main( )

{

	struct book 

	{

		char n[ 20 ] ;

		int nop ;

		float pr ;

	} ;



	struct book b = { "Basic", 425, 135.00 } ;

	// Passing structure elements  by value

	display ( b.n, b.nop, b.pr ) ;

	

	return 0 ;

}

// Pass by value

void display ( char *n, int pg, float p )

{

	printf ( "%s %d %f\n", n, pg, p ) ;

}

A pure call by value is not possible here, since we cannot pass the array, n, by value. It would always be passed by reference. ...