( 29 )有如下程序#include iostreamusing namespace std;class A{public:A(int i=0):r1(i) { }void print() {cout ' E ’ r1 ' - ' ;}void print() const {cout ' C ' r1*r1 ' - ' ;}void print(int x) {cout ' P ' r1*r1*r1 ' - ' ;}private:int r1;};int main() {A a1;const A a2(4);a1.print(2);a1.print();return 0;}运行时的输出结果是A ) P8-E4B ) P8-C16-C ) P0-E4-D ) P0-C16-
( 29 )有如下程序
#include <iostream>
using namespace std;
class A{
public:
A(int i=0):r1(i) { }
void print() {cout<< ' E ’ <<r1<< ' - ' ;}
void print() const {cout<< ' C ' <<r1*r1<< ' - ' ;}
void print(int x) {cout << ' P ' <<r1*r1*r1<< ' - ' ;}
private:
int r1;
};
int main() {
A a1;
const A a2(4);
a1.print(2);
a1.print();
return 0;
}
运行时的输出结果是
A ) P8-E4
B ) P8-C16-
C ) P0-E4-
D ) P0-C16-
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