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写出下列程序的执行结果是:__________________。#includeusing namespace std;int a=10;void main(){ int a=20; { int a=30; } cout<<::a<

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写出下列程序的执行结果是:__________________。#includeusing namespace std;int a=0;void main(){ int a=1; { int a=2; cout<

写出下列程序的执行结果是:__________________。#includeusing namespace std;int sub( int, int );int a = 1 ;void main(){ int m = 1, n = 2, f; f = sub( m, n ); f = sub( m, n ) ; cout << a <<","<< f << endl;}int sub( int c, int d ){ static int m = 2, n = 5 ; a = ++ a ; c = m ++ ; d = n ++; return c + d ;}

请将下列程序按注释部分的要求补充完整。#include int avar;main(){int avar=25;//在下画线处填上语句,将全局变量avar赋值10________________//在下画线处填上语句,输出全局变量avar的值cout<<"g1obal avar is:"<<::avar<

请将下列程序按注释部分的要求补充完整。#include int avar=10;main(){//在下画线处填上语句,定义局部变量avar并赋予初始值25______________cout<<"avar is"<

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