题目内容
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[单选题]
以下程序运行结果是()。#includevoid f(int a, int b);void f(int a, int b){int t;t = a;a = b;b = t;}void main(){int x = 3, y = 2, z = 1;if (x > y)f(x, y);if (y > z)f(y, z);if (x > y)f(x, y);printf("%d, %d, %d", x, y, z);}
A.1, 2, 3
B.3, 2, 1
C.1, 3, 2
D.2, 3, 1
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