ECE2574_Function_Calling_Example, C++ (clang)

ECE2574_Function_Calling_Example

// clang 3.8.0
// Example from Lecture 5 in class on calling functions
// by reference and vale

#include <iostream>
using namespace std;

void myFuncByValue(int n) 
{
    n++;
}

void myFuncByReferenceCStyle(int *n) 
{
    (*n)++;
}

void myFuncByReferenceCppStyle(int &n) 
{
    n++;
}

int main()
{
    int i = 3;
    cout << "Test Program for calling functions" << endl;
    
    // Calling by value
    cout << "Value of i prior to calling myFuncByValue is: " << i << endl;
    myFuncByValue(i);
    cout << "Value of i after to calling myFuncByValue is: " << i << endl;
    
    // Calling by reference C-style
    cout << "Value of i prior to calling myFuncByReferenceCStyle is: " << i << endl;
    myFuncByReferenceCStyle(&i);
    cout << "Value of i after to calling myFuncByReferenceCStyle is: " << i << endl;
    
    // Calling by reference C++-style
    cout << "Value of i prior to calling myFuncByReferenceCppStyle is: " << i << endl;
    myFuncByReferenceCppStyle(i);
    cout << "Value of i after to calling myFuncByReferenceCppStyle is: " << i << endl;
    
    return 0;
}


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