Javatpoint Logo
Javatpoint Logo

Long Data Type C++

C++ is a flexible and strong programming language combining the procedural and object-oriented programming paradigms. C++, created as an extension of the C programming language, adds important features like classes and objects, making it possible to write modular and reusable code. One of C++'s advantages is its capacity for low-level memory access and effective resource management, making it appropriate for system-level programming and application development. C++ is extensively utilised in many fields, such as game development, embedded systems, and high-performance computing, because of its extensive library and vibrant developer community. Because of its performance and adaptability, it is the best option for projects where control over hardware resources and efficiency are crucial.

Long Data Type C++

Additionally, C++ allows for generic programming via templates, which lets programmers construct code that doesn't depend on the data types. This feature encourages the creation of adaptable and generic algorithms and improves code reuse. Furthermore, C++ has developed, adding new standards and features to improve code readability and developer efficiency. Although its syntax is more complicated than certain other languages, this complexity allows for many control and optimisation possibilities. Because it balances high-level abstraction and low-level manipulation, the C++ programming language is an effective tool for developing various applications in various computer environments.

Long in C++

The long data type in C++ is a modification that increases the range of an int-based basic data type. Declaring variables with this feature allows them to hold greater integer values than their non-long equivalents. There are three basic data types to which the long modifier can be applied: int, double, and long double. I'll concentrate on the long int data type in this response.

The representable integer range is wider for the long int data type-also called just "long"-than for a conventional int. A long int can represent a larger range of values since it must be at least 32 bits in size, even though the exact size of an int varies depending on the system. Most contemporary systems have a long int of 32 bits, but it can be 64 bits on some architectures.

Long Data Type C++

Example - 1

This is an illustration of how to declare and use a long int variable in C++:

BigNumber is defined as a long integer in this example, and its value is assigned above the maximum representable number for a regular integer. The literals have the L suffix added to them to denote that they ought to be handled like long values.

When working with huge integers, it is imperative to utilise long to avoid overflow problems when storing numbers larger than an ordinary int's range. Remember that utilising larger data types will affect memory use, so select the right type based on your program's requirements.

Example - 2

In this example, the population_of_country and national_debt long int variables are defined and initialised with huge values. The L suffix is applied to denote that these literals ought to be handled as long values. This is helpful when working with quantities that may be greater than the range that a conventional int can represent, like population numbers or financial values.

Using the long data type ensures that these variables can hold greater values without resulting in overflow problems. Selecting the right data type for your programme is critical based on its unique requirements and expected range of values.

Example - 3

Constants associated with time computations are represented in this example by long int. To guarantee they can handle bigger values if necessary, the variables seconds_per_minute, minutes_per_hour, and hours_per_day are declared long int constants. These constants are then multiplied to determine the total_seconds_in_a_day variable, and the result is reported.

To ensure that the data types used in calculations are appropriate for the expected range of results, this example shows how the long data type can be helpful when working with constants that may entail big numerical values.


We've talked about the C++ long data type throughout our discussion, emphasising long int. Compared to a conventional int, the long modifier increases the range of representable integers. To avoid overflow problems, it is frequently employed when working with huge numerical values. The long int data type has a minimum bit size of 32, but on some platforms, it can have a bit size of 64, giving a greater range for integer values. We looked at instances where long int is used, such as when handling time-related constants, representing big integers, and handling amounts beyond a conventional int's range. In conclusion, C++'s long data type is useful for handling bigger integer values and guaranteeing proper data representation in various programming contexts.

Youtube For Videos Join Our Youtube Channel: Join Now


Help Others, Please Share

facebook twitter pinterest

Learn Latest Tutorials


Trending Technologies

B.Tech / MCA