沒學C的可能那個arr*這種不知道吧 數組做形參,會退化為指針。數組做參數,沒有副本機制,直接操作原數組。在形參里面,arr[]和*arr沒有區別,都是指向arr的數組。在實參傳數據的時候,arr[],傳人實際數組名,*arr,傳人指向數組的指針。
#include <iostream>
#include <stdlib.h>
using namespace std;
namespace myNum
{ int x = 105; }
int main()
{ bool isFlag = false;
if(myNum::x % 2 == 0)
{
isFlag = false;
}
else
{
isFlag = true;
}
if(isFlag == true)
{
cout<<"x為奇數"<<endl;
}
else
{
cout<<"x為偶數"<<endl;
}
return 0;
}
#include <stdlib.h>
using namespace std;
namespace myNum
{ int x = 105; }
int main()
{ bool isFlag = false;
if(myNum::x % 2 == 0)
{
isFlag = false;
}
else
{
isFlag = true;
}
if(isFlag == true)
{
cout<<"x為奇數"<<endl;
}
else
{
cout<<"x為偶數"<<endl;
}
return 0;
}
#include<iostream>
#include<cstdlib.h>
using namespace std;
int main()
{
cout<<"請輸入一個整數:例如5201314"<<endl;
int x=0;
cin>>x;
cout<<oct<<x<<endl;
cout<<dec<<x<<endl;
cout<<hex<<x<<endl;
cout<<"請輸入一個布爾值0或者1"<<endl;
bool y=ture;
cin>>y;
cout<<boolalpha<<y<<endl;
system("pause")
return 0;
}
#include<cstdlib.h>
using namespace std;
int main()
{
cout<<"請輸入一個整數:例如5201314"<<endl;
int x=0;
cin>>x;
cout<<oct<<x<<endl;
cout<<dec<<x<<endl;
cout<<hex<<x<<endl;
cout<<"請輸入一個布爾值0或者1"<<endl;
bool y=ture;
cin>>y;
cout<<boolalpha<<y<<endl;
system("pause")
return 0;
}
2016-11-19
using namespace std;
namespace A
{
int x = 105;
}
int main()
{
bool isFlag = false;
if(A::x % 2 == 0)
{
isFlag=false;
}
else
{
isFlag=true;
}
if(isFlag==true)
{
cout <<"X是奇數"<<endl;
}
else
{
cout<<"X是偶數"<<endl;
}
system("pause");
return 0;
}
namespace A
{
int x = 105;
}
int main()
{
bool isFlag = false;
if(A::x % 2 == 0)
{
isFlag=false;
}
else
{
isFlag=true;
}
if(isFlag==true)
{
cout <<"X是奇數"<<endl;
}
else
{
cout<<"X是偶數"<<endl;
}
system("pause");
return 0;
}
namespace myNum
{
int x = 105;
}
int main()
{
bool isFlag = false;
if(myNum::x % 2 == 0)
{
isFlag=false;
}
else
{
isFlag=true;
}
if(isFlag)
{
cout<<myNum::x<<"是奇數"<<endl;
}
else
{
cout<<myNum::x<<"是偶數"<<endl;
}
}
{
int x = 105;
}
int main()
{
bool isFlag = false;
if(myNum::x % 2 == 0)
{
isFlag=false;
}
else
{
isFlag=true;
}
if(isFlag)
{
cout<<myNum::x<<"是奇數"<<endl;
}
else
{
cout<<myNum::x<<"是偶數"<<endl;
}
}