use of stdarg.h header.c

#include <stdio.h>
#include <stdarg.h>

float average(int n_values, ...) {
	va_list var_arg;
	int count;
	float sum = 0;

	// Prepare to access the variable arguments.

	va_start(var_arg, n_values);		

	// Add the values from the variable argument list
	for(count = 0; count < n_values; count++)
		sum += va_arg(var_arg, int);

	// Done processing variable arguments

	va_end(var_arg);

	return sum/n_values;	
}

int main(void) {
	printf("%f", average(3, 11, 2, 3));
}