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