20 lines
293 B
C++
20 lines
293 B
C++
/* 两数交换.cpp */
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#include <iostream>
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using namespace std;
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void swap(int &a, int &b);
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int main(int argc, char const *argv[]) {
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int x1(5);
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int x2(7);
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swap(x1, x2);
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cout << x1 << " " << x2 << endl;
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return 0;
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}
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void swap(int &a, int &b) {
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int t;
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t = a;
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a = b;
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b = t;
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}
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