find the 2 number to multiple using pass the reference #coding #functionparameters #cprogramming

When you use pass-by-reference in C, you pass the memory address of a variable to a function, rather than passing its value. This allows the function to directly modify the original variable's value.

Steps:
Passing the Address:
Instead of passing the value of a variable to a function, you pass the memory address of that variable. This is done using pointers.

Function Modifies the Variable:
Inside the function, the pointer allows direct access to the original variable’s value (through dereferencing the pointer). The function can modify the value of the variable at the memory address provided.

Effect on Original Variable:
Since the function is working directly with the memory address of the variable, any changes made inside the function will affect the original variable, outside the function as well.

Example Scenario (Conceptually):
You have two numbers (say num1 and num2).

You want to multiply these numbers inside a function and return the result.

Instead of just passing the values of num1 and num2 (which would create a copy of the values), you pass their addresses.

The function then calculates the multiplication and directly modifies a result variable through its address.

Thus, the function can alter the values of the original variables or store results directly in a variable without needing to return anything, using pass-by-reference.
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