C++ Rand函数错误

Question

我正在尝试制作一个基于文本的角色扮演游戏,我正在实现diceroll功能:

int diceRoll(){
int n;
srand(time(0));
n = rand() % 4;
return n;
}
int main()
{
    int RandNum = diceRoll();
    cout<< "   Randomly generated number: " + RandNum;
    return 0;
}

然而它输出了这个:

Answer 1

尝试: cout << "Randomly generated number: " << RandNum;