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C/C++ Source Codes

References can be used to allow a function to modify a calling variable

//References can be used to allow a function to modify a calling variable :
#include <iostream.h>
void change (double &r, double s)
{
r = 100;
s = 200;
}
void main ()
{
double k, m;
k = 3;
m = 4;
change (k, m);
cout << k << ", " << m << endl; // Displays 100, 4.
}


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