Difference between int main() and signed main()

Question

What is difference between int main() and signed main().

signed main()
{
  ....
}

int main()
{
  ....
}

Answer 1

signed本身就是一样，int因此在编译或工作方式上没有区别。但是对于阅读代码的人来说，这可能是令人困惑的，因为这不是一般惯例。它只是int为了减少混乱。