what is the output of the following program

	#include <stdio.h>
	int add(int x,int y,int z)
	{
	printf("%d\n",x+y+z);
	return;
	}
	int main()
	{
	add(2,3,5);
	int x=add(2,3,5);
	printf("%d",x);
	return 0;
	}

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10
10
garbage value
if your function does not return any value , it must be declared as void