Question

求解C++题，读程序写结果

2．
#include <iostream.h>
void spin(int a[][3],int b[][3],int m,int n);
void main(){
int a[3][3]={{1,2,3},{4,5,6},{7,8,9}},b[3][3],i,j;
spin(a,b,3,3);
for(i=0;i<3;i++)
{for( j=0;j<3;j++)
cout<<b[i][j]<<' ';
cout<<endl;}
}
void spin(int a[][3],int b[][3],int m,int n){
for(int i=0;i<m;i++)
for(int j=0;j<n;j++)
b[i][j]=a[n-1-j][i];
}

程序运行的结果是：

3．
#include <iostream.h>
class A{
public:
A(){
x = y = 0;
c++;
print();
cout << "default constructor called." << endl;
}
A(int xx , int yy){
x = xx;
y = yy;
c++;
print();
cout << "constructor called." << endl;
}
void print(){
cout << x <<" "<< y <<" "<< c<< endl;
}
~A(){
c--;
print();
cout << "destructor called." << endl;
}
private:
int x , y;
static int c;
};
int A::c = 0;
void main(){
A *p = new A(2 , 3);
A a;
delete p;
}

程序运行的结果是：

4.
#include <iostream.h>
void fun(int a[],int x,int &n){
int i,j;
for(i=j=0;i<n;i++)
if(a[i]!=x)a[j++]=a[i];
n=j;
}
void main(){
int x[10]={37,14,25,44,31,18,25,14,14,10},n=10;
fun(x,14,n);
for(int i=0;i<n;i++)
cout<<x[i]<<" ";
cout<<endl;
}

程序运行的结果是：

5. #include <iostream.h>
void main(){
long n = 95324168 , num = 0;
int k = 1 , i;
for(i = 1 ; n > 0 ; i++) {
if( i % 2 ) {
num = num + (n % 10) * k;
k = k * 10;
}
n = n / 10;
}
cout << num << endl;
}

运行结果是

Answer 1

7 4 1
8 5 2
9 6 3
【2】
3 2 1
constructor called.
0 0 2
default constructor called
2 3 1
destructor called
0 0 0
distructor called
[3]
7 25 44 31 18 25 10
[4]
2518
[5]

Answer 2

在机器上分别运行一下不就全部有了

追问

没有软件啊.......

追答

可以上网就可以下一个VC
5、
5218

Answer 3

我觉得最好自己在电脑上跑一遍
这样才有效果 ，知道答案没有用