关于下述代码，说法错误的是（ ）。
int multiply(int x, int y); int main() { int a = 4; int b = 5; int result = multiply(a, b); std::cout << "The result is: " << result << std::endl; return 0; } int multiply(int x, int y) { return x * y; }关于下述代码，说法错误的是（ ）。
int multiply(int x, int y); int main() { int a = 4; int b = 5; int result = multiply(a, b); std::cout << "The result is: " << result << std::endl; return 0; } int multiply(int x, int y) { return x * y; }