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#include <iostream> #include <vector> #include <algorithm> using namespace std; int main() { int a = 10, b = 25; cout << "Before: a = " << a << " | b = " << b << "\n"; swap(a, b); cout << "After: a = " << a << " | b = " << b << "\n"; return 0; }
Before: a = 10 | b = 25
After: a = 25 | b = 10
