```html

Difference between Passing by Value and Passing by Reference in C/C++

When passing by value in C/C++, a copy of the actual parameter is passed to the function, and any changes made to the parameter within the function do not affect the original parameter in the calling function.

On the other hand, when passing by reference in C/C++, the memory address of the actual parameter is passed to the function, allowing the function to directly modify the original parameter in the calling function.

Passing by value is typically used when you do not want the function to modify the original parameter, while passing by reference is used when you want the function to modify the original parameter.

```