?? p16.cpp
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#include <iostream.h>void swap (int &i, int &j);main() { int a = 1, b = 2; cout << "a and b:" << a << " " << b << endl; swap (a,b); cout << "a and b:" << a << " " << b << endl; return 0;}void swap (int &i, int &j) { int t=j; j = i; i = t;}
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