下列函数的运行结果是()。includeint add(int a,int b);void main(){extem int x,y; 下列函数的运行结果是( )。 #include<iostream.h> int add(int a,int b); void main() { extem int x,y; cout<<add(x,y)<<endl; } int x(20),y(5); int add(int a,int b) { int s=a+b; return s; )A.25B.30C.20D.15

下列函数的运行结果是()。includeint add(int a,int b);void main(){extem int x,y;

下列函数的运行结果是( )。 #include<iostream.h> int add(int a,int b); void main() { extem int x,y; cout<<add(x,y)<<endl; } int x(20),y(5); int add(int a,int b) { int s=a+b; return s; )

A.25

B.30

C.20

D.15


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