Block code is a method used in computer programming where instructions are grouped together in a specific structure, often enclosed within curly braces . This approach helps organize code into manageable sections, making it easier to read and maintain. Each block can represent a function, loop, or conditional statement, allowing programmers to define the scope and behavior of variables and operations within that block. In addition to improving readability, block code enhances the efficiency of programming languages like Java, C++, and Python. By clearly defining blocks, developers can avoid errors and ensure that code executes in the intended order. This structured format is essential for creating complex software applications.