C++ Lessons : 18.2. Omit Array Size

[quix]

Omit Array Size

In C++, you don't have to specify the size of the array. The compiler is smart enough to determine the size of the array based on the number of inserted values:

string cars[] = {"Volvo", "BMW", "Ford"}; // Three arrays
 

The example above is equal to:

string cars[3] = {"Volvo", "BMW", "Ford"}; // Also three arrays
 

However, the last approach is considered as "good practice", because it will reduce the chance of errors in your program.

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Omit Elements on Declaration

It is also possible to declare an array without specifying the elements on declaration, and add them later:

Example

string cars[5];
cars[0] = "Volvo";
cars[1] = "BMW";
...