void fun (int x, int y , int *a, int *b) { *a = x + y; *b = x - y; } int main(void) { int x = 20,y = 10,a = 0, b = 0; fun(x, y, &a, &b) ; printf(" %d, %d", a, b) }
0, 0
30, 10
10, 30
不确定
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