Scoping and Call by Need evaluation

Question

Find the output of the below program in case of Dynamic Scoping with call by need evaluation method

int x=10,y=10;

main()

{

int x=2;

int y=3;

fun1(x+y,5);

printf("x");

}

fun1(int z,int k)

{

k=z+k;

}

Answer 1

 Output --> x     ,  for call by need , Refer--> http://stackoverflow.com/questions/8701834/call-by-need-vs-call-by-name  & Call by need --> https://en.wikipedia.org/wiki/Evaluation_strategy