C++

Identifiers and Types Constants Variables Assignment And Arithmetic Operators Bitwise Operators Logical Operators const static register volatile extern Statements if if - legal expressions ?: switch switch, no break Nested switch while do-while for Link for missing sections for, function in section bodyless for break continue goto exit Arrays Intro Bi-Dimensional Arrays Arrays and Loops Array Initialization Arrays As Functions Arguments Passing Multidimensional Arrays arrays, bound checking Pointers Pointer Increment Decrement Arrays of Pointers Pointer-Array Relationship Pointer Assignment Structures Arrays of Structures Structures containing Arrays Single Structure Declaration Functions in Structures Bit fields Unions Functions Within Unions Enumerations Functions Function Parameters How to Pass Parameters Arrays as Arguments Function Prototype Inline Functions Class-Object Definition Constructor Constructors and Destructors Passing Objects and Returning them Class Static Variables Class Static Functions Inheritance Intro protected Members Inherited Constructors and Destructors Multiple Inheritance Multiple Inheritance-Constructors Destructors Multiple Base-Disambiguation Disambiguation-Virtual Base Classes Constructor Parameters-Derived to Base Turning public Into protected in a Derived Class Function Overloading Intro Overloaded Constructors Copy Constructors Default Arguments Function Address Virtual Functions Intro Virtual Functions-Multiple Inheritance Abstract Class

Bound Checking

No checking on array bounds is performed. If an array’s length is set to 10:

int arrayOfInt[10];

the following statement is legal:

cout << arrayOfInt[16];

and it simply returns the content that the fifteenth element would have had, had the array been declared as being of length 17 or above. Reading such an element does no harm. Assigning some value to it can introduce some hard to spot bug. In order to obtain bound checking, use the array STL template.

Example


#include <iostream>
using namespace std;

int main()
{   
     int arrayOfInt[10];
     arrayOfInt[16] = 6;
     cout << "7th int after the last array element: " 
          << arrayOfInt[16];
}

Output

7th int after the last array element: 6