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function call in c++

Dull Dormouse answered on October 18, 2020 Popularity 10/10 Helpfulness 4/10

answer function call in c++

related c++ function.

function call in c++

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#include <iostream>
using namespace std;
//REMOVE COMMENTS TO USE VARIOUS FUNCTION CALLING METHODS
// function declaration
void swaper(int &,int&) ;// call  by reference
//void swaper(int *,int * );// call by address
//void swaper(int,int );//call by value


int main () {
   // local variable declaration:
   int a = 100;
   int b = 200;
   /* calling a function to swap the values using variable reference.*/
   swaper(a, b);// call by reference
   //swaper(&a, &b); //call by address
   //swaper(a, b); // call by value
   cout << "After swap, value of a :" << a << endl;
   cout << "After swap, value of b :" << b << endl;

   return 0;
}

//CALL BY refernce DEFINATION
void swaper(int &x, int &y) // x and y are ref variable..ie they are other name for a and b
{
   int temp;
   temp = x; //save the value as x which is ref for a
   x = y;    // put y into x
   y = temp; // put x into y
}
//CALL BY ADD DEFINATION
/*void swaper(int *x, int *y) {
   int temp;
   temp = *x; //save the value at address x
   *x = *y;    // put y into x
   *y = temp; // put x into y
*/

// CALL BY VALUE DEFINATION
/* void swaper(int x, int y) {
   int temp;
   temp = x; // save the value of local x
   x = y;    // put local y into local x
   y = temp; //put local x into local y
*/

Popularity 10/10 Helpfulness 4/10 Language cpp

Source: Grepper

Tags: c++ function-call

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Contributed on Oct 18 2020

Dull Dormouse

0 Answers Avg Quality 2/10

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c++ function.

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// C++ Program to demonstrate working of a function
#include <iostream>
using namespace std;
 
// Following function that takes two parameters 'x' and 'y'
// as input and returns max of two input numbers
int max(int x, int y)
{
    if (x > y)
        return x;
    else
        return y;
}
 
// main function that doesn't receive any parameter and
// returns integer
int main()
{
    int a = 10, b = 20;
 
    // Calling above function to find max of 'a' and 'b'
    int m = max(a, b);
 
    cout << "m is " << m;
    return 0;
}

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Nov 08 2022

Sparkling Sloth

0 Answers Avg Quality 2/10

function call in c++

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