W3School TIY Editor

#include <iostream> using namespace std; int plusFunc(int x, int y) { return x + y; } int plusFunc(int x, int y, int z) { return x + y + z; } int main() { int result1 = plusFunc(3, 7); int result2 = plusFunc(1, 2, 3); cout << "2 个数的和：" << result1 << "\n"; cout << "3 个数的和：" << result2; return 0; }