有下列程序:includeusing namespace std;int main(){void function(double val);doub 有下列程序: #include<iostream> using namespace std; int main() { void function(double val); double val; function(val); cout<<val; return 0; } void fimction(double val) { vA.编译出错,无法运行B.输出3C.输出:3.0D.输出一个不确定的数

有下列程序:includeusing namespace std;int main(){void function(double val);doub

有下列程序: #include<iostream> using namespace std; int main() { void function(double val); double val; function(val); cout<<val; return 0; } void fimction(double val) { v

A.编译出错,无法运行

B.输出3

C.输出:3.0

D.输出一个不确定的数


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