programming-examples/c++/Others/A simple bounded 2-d array example..cpp
2019-11-15 12:59:38 +01:00

61 lines
981 B
C++

A simple bounded 2-d array example.
#include <iostream>
#include <cstdlib>
using namespace std;
class MyArray {
int isize, jsize;
int *p;
public:
MyArray(int i, int j);
int &put(int i, int j);
int get(int i, int j);
};
MyArray::MyArray(int i, int j)
{
p = new int [i*j];
if(!p) {
cout << "Allocation error\n";
exit(1);
}
isize = i;
jsize = j;
}
int &MyArray::put(int i, int j)
{
if(i <0 || i>=isize || j<0 || j>=jsize) {
cout << "Bounds error!!!\n";
exit(1);
}
return p[i*jsize + j];
}
int MyArray::get(int i, int j)
{
if(i <0 || i>=isize || j<0 || j>=jsize) {
cout << "Bounds error!!!\n";
exit(1);
}
return p[i*jsize +j];
}
int main()
{
MyArray a(2, 3);
int i, j;
for(i = 0; i <2; i++)
for(j=0; j<3; j++)
a.put(i, j) = i+j;
for(i = 0; i <2; i++)
for(j=0; j<3; j++)
cout << a.get(i, j) << ' ';
a.put(10, 10);
return 0;
}