if +％的问题。 [英] problem with if + %.

问题描述

x = 32154

if（X％2）



错误无法将类型''int''隐式转换为''bool ''

x = 32154
if (X % 2)

Error Cannot implicitly convert type ''int'' to ''bool''

推荐答案

是的，在c＃中，整数值表达式不被 0隐式转换为bool == false ， 0！= true （就像c / c ++那样）。

通常，你会进行一些比较关于价值：

Yes, in c#, an integer valued expression will not be implicitly converted to bool with 0 == false, 0 != true (like c/c++ does).
Typically, you perform some comparison on the value:

int x = 32154;
if ((x % 2) == 0)

如果你只是检查偶数与奇数，只需检查低位（假设你是两个赞美的）架构）：

If you are just checking for even vs. odd, just check the low order bit (assuming you''re on a twos-compliment architecture):

if ((x & 1) == 0)    // x is even
if ((x & 1) == 1)    // x is odd

我一直在考虑



if（（x％2）== 0）



和我想要的是



if（（x％2）== 1）



但tnx无论如何我很欣赏

i have been experamenting with

if ((x % 2) == 0)

and the ting i wanted is

if ((x % 2) == 1)

but tnx anyway i appreciate it

嗯......你们但它疯狂地看着这个！我正在使用C＃！

hmm... yes but it is buging like crazy look at this !i am using C#!

Console.WriteLine("This is a program that calculates the gcd of some typed number");
            int StartingNum = Convert.ToInt16(Console.ReadLine());
            int NumForCalculate = StartingNum;
            string gcd = ("");
            int gathering = 1;
            operation:
            int x = 2;
            operation2:
            if ((NumForCalculate / x) == :see below:)
            {
                if (gcd == "")
                    gcd = ("" + x);
                else
                    gcd = (gcd + "," + x);
                NumForCalculate = (NumForCalculate / x);
                gathering = gathering * x;
                if (NumForCalculate <= 1)
                    goto end;
                else
                    goto operation;
            }
            else
            {
                x++;
                goto operation2;
            }
            end:
            Console.WriteLine("gcd of integers {0} is {1}, and gathering this set of numbers is {2}", StartingNum, gcd, gathering);
            Console.ReadKey();

如果我设置20



如果（（NumForCalculate / x）== 1）



那么整数20的gcd是11，并且收集这组数字是11



if（（NumForCalculate / x）== 0）



然后gcd的整数20是21，并收集这个一组数字是21

if i set 20

if ((NumForCalculate / x) == 1)

then gcd of integers 20 is 11, and gathering this set of numbers is 11

if ((NumForCalculate / x) == 0)

then gcd of integers 20 is 21, and gathering this set of numbers is 21

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