Call by Value vs Call by Reference
Parameter passing determines what a function receives when you call it. The choice affects program behavior, safety, and performance across languages. Call by Value and Call by Reference are the two most familiar models, and understanding how they differ helps you write code that is both safer and more efficient. Overview of Function Parameter Passing What is Parameter Passing Mechanism? A parameter passing mechanism defines how actual parameter values or references are passed to formal parameters during function calls. Various methods exist including Call by Value, Call by Reference, Call by Name, and Call by Need. ...