в 14:21, 25 мая 2010

2010-05-25T14:21:06Z

Admin: 1 версия: Импорт контента...

2010-05-25T10:27:52Z

1 версия: Импорт контента...

Новая страница

==Comparing Pointer Addresses==

<source lang="cpp">

#include <iostream>
using namespace std;
const int Lengh = 3;
int main ()
{
int testScore[Lengh] = {4, 7, 1};
int* intPointer = testScore;
int i = 0;
while (intPointer <= &testScore[Lengh - 1])
{
cout << "The address of index " << i
<< " of the array is "<< intPointer << endl;
cout << "The value at index " << i
<< " of the array is "<< *intPointer << endl;
intPointer++;
i++;
}
return 0;
}

</source>

==Incrementing a Pointer==

<source lang="cpp">
#include <iostream>
using namespace std;
const int Lengh = 3;
int main ()
{
int testScore[Lengh] = {4, 7, 1};
int* intPointer = testScore;
for (int i = 0; i < Lengh; i++, intPointer++)
{
cout << "The address of index " << i << " of the array is "<< intPointer << endl;
cout << "The value at index " << i << " of the array is "<< *intPointer << endl;
}
return 0;
}

</source>

==Index a pointer as if it were an array. ==

<source lang="cpp">
#include <iostream>
#include <cctype>
using namespace std;

int main()
{
char *p;
int i;
char str[80] = "This Is A Test";

cout << "Original string: " << str << endl;

p = str; // assign p the address of the start of the array

for(i = 0; p[i]; i++) { // index p
if(isupper(p[i]))
p[i] = tolower(p[i]);
else if(islower(p[i]))
p[i] = toupper(p[i]);
}

cout << "Inverted-case string: " << str;

return 0;
}

</source>

==The Array Name as a Constant Pointer==

<source lang="cpp">
#include <iostream>
using namespace std;
const int Lengh = 3;
int main ()
{
int testScore[Lengh] = {4, 7, 1};
cout << "The address of the array using testScore is " << testScore << endl;
cout << "The address of the first element of the array using &testScore[0] is " << &testScore[0] << endl;

cout << "The value of the first element of the array using *testScore is " << *testScore << endl;

cout << "The value of the first element of the array using testScore[0] is " << testScore[0] << endl;
return 0;
}

</source>

==The name of the array is a constant pointer==

<source lang="cpp">
#include <iostream>
using namespace std;
const int Lengh = 3;
int main ()
{
int testScore[Lengh] = {4, 7, 1};
int* intPointer = testScore;
for (int i = 0; i < Lengh; i++)
{
cout << "The address of index " << i << " of the array is "<< & intPointer[i] << endl;
cout << "The value at index " << i << " of the array is "<< intPointer[i] << endl;
}
return 0;
}

</source>

==using array name as a constant pointer==

<source lang="cpp">
#include <iostream>
using namespace std;
int main()
{
const int NUM_SCORES = 3;
int highScores[NUM_SCORES] = {5, 3, 2};
cout << "using array name as a constant pointer.\n";
cout << *highScores << endl;
cout << *(highScores + 1) << endl;
cout << *(highScores + 2) << "\n\n";
return 0;
}

</source>

==Using a Variable Pointer to Point to an Array==

<source lang="cpp">

#include <iostream>
using namespace std;
const int Lengh = 3;
int main ()
{
int testScore[Lengh] = {4, 7, 1};
for (int i = 0; i < Lengh; i++)
{
cout << "The address of index " << i << " of the array is "<< &testScore[i] << endl;
cout << "The value at index " << i << " of the array is "<< testScore[i] << endl;
}
return 0;
}

</source>

← Предыдущая	Версия 14:21, 25 мая 2010
(нет различий)

C++/Pointer/Pointer Array - История изменений

в 14:21, 25 мая 2010

Admin: 1 версия: Импорт контента...