C++ Interview Questions

In how many ways we can initialize an int variable in C++?

In c++, variables can be initialized in two ways, the traditional C++ initialization using “=” operator and second using the constructor notation.

Traditional C++ initilization

• int i = 10;

variable i will get initialized to 10.

Using C++ constructor notation

• int i(10);

Implicit conversions are performed when a type (say T) is used in a context where a compatible type (Say F) is expected so that the type T will be promoted to type F.

short a = 2000 + 20;

In the above example, variable a will get automatically promoted from short to int. This is called implicit conversion/coercion in c++.

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