Initial commit

c++/Others/A simple bounded 2-d array example..cpp

@@ -0,0 +1,60 @@
+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;
+}