Lambdas

Lambdas1

#include <iostream>
using namespace std;

int main(){
    int multiplier = 25;

    /*Takes an integer input by reference and multiplies it by 2.*/
    auto func1 = [](int& a){a *=2;}; 

    /*Takes an integer input by value, multiplies it by 2 and returns the result.*/
    auto func2 = [](int a)->int {a *=2; return a;}; 

    /*Takes an integer input by value, multiplies it by multiplier whose value is captured from the outer scope and returns the result.*/
    auto func3 = [multiplier](int a)->int{a *= multiplier; return a;}; 

    int temp = 5;
    func1(temp);
    cout << temp<<endl;
    cout << func2(temp)<<endl;
    cout << func3(temp)<<endl;
}