float转int没有所谓的四舍五入

想起毛爷爷的一句话：“没有调查就没有发言权”。

using System;
using System.Collections.Generic;

namespace ProjectTest
{
    class cr
    {
        private static void Main()
        {
            float f1 = -123.456F;
            float f2 = -123.567F;
            float f3 = 123.456F;
            float f4 = 123.567F;
            int i1 = (int)f1;
            int i2 = (int)f2;
            int i3 = (int)f3;
            int i4 = (int)f4;
            Console.WriteLine("i1=" + i1);
            Console.WriteLine("i2=" + i2);
            Console.WriteLine("i3=" + i3);
            Console.WriteLine("i4=" + i4);
            Console.ReadLine();
        }
    }
}