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#include <cstdlib>#include <iostream>using namespace std;void swap(int &a, int &b){ a = a ^ b; b = b ^ a; a = a ^ b; }int main(int argc, char *argv[]){ int a = 9; int b = 10; swap(a, b); cout << "a: " << a << endl; cout << "b: " << b << endl; system("PAUSE"); return EXIT_SUCCESS;} 

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