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//============================================================================
// Name        : testCpp.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
using namespace std;


void  decrement(int n) {
    n=n-1;
}

int main() {
    int a = 5;
    decrement(a);
    cout << a << endl;
}