W3School TIY Editor

#include <iostream> using namespace std; int main() { int x = 5; int y = 0; if(y == 0) { cerr << "除零错误: " << x << " / " << y << "\n"; } else { cout << (x / y); } return 0; } // 非 Windows 系统输出： // 除零错误: 5 / 0