有如下程序:include void fun(int& x, int y){int t=x;x=y;y=t;}int main (){int有如下程序: #include <iostream> void fun(int& x, int y){int t=x;x=y;y=t;} int main () { int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; } 执行后的输出结果是A.42,42B
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有如下程序:include void fun(int& x, int y){int t=x;x=y;y=t;}int main (){int
有如下程序: #include <iostream> void fun(int& x, int y){int t=x;x=y;y=t;} int main () { int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; } 执行后的输出结果是
A.42,42
B.23,23
C.23,42
D.42,23
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