What is a parameter passing?

Answer 1

Passing parameters probably means passing a parameter into a function.Basically, this happens when you call a function.

You put the parameter into a function, then call it, and the function does something to the parameters you put into it.

Here's an example:

#include <iostream>

using namespace std;

int sum(int a, int b); //Declare the function, so the program knows that it exists

int main() {

int first, second, total;

cout<<"Please insert two numbers."<<endl;

cin>>first>>second;

total=sum(first, second); /*Here we are passing the variables (parameters) "first" and "second" into the function "sum". This function then does something to them and outputs the value. In this case, it is stored in the variable "total"*/

cout<<"Their sum is "<<total<<"."<<endl;

return 0;

}

//Here we define the function (tell the program what to do)

int sum(int a, int b) { //We pass two integers into the function. Their values are stored in a and b. a and b can then be used by the function.

sum=a+b;

return sum;//Adds them, then returns the sum

}

Answer 2

in programming parameter passing refers to give the values of x and y. for example a function Add() adds two numbers x and y, now it needs two value we pass parameters 2 and 3 to it. Add(2,3) the answer is 5.

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