C计算未按预期运行

时间:2015-08-13 13:03:38

标签: c

大家好,我目前正在尝试使用不同的ai玩家在地图上创建一个简单的游戏。

我来计算计算以计算出一定数量的健康损失,虽然我确信我的数学背后的数学是正确的,但c的实现似乎并没有起作用!我可能错过了一个简单的观点,但我会把代码的提取物放在预期的工作中。

random1 = Numbergen(50);
cal1 = (100 - random1)/100;
random2 = Numbergen(50);
cal2 = (100 - random2) / 100;
PtrPlayer[attacker].health = (double)(PtrPlayer[attacker].health * cal1);
PtrPlayer[ncount].health = (double)(PtrPlayer[ncount].health * cal2);
printf("There was a battle but both players drawed and retreated.\n");
return 1;

Numbergen是一个根据时间种子计算随机数的函数,50是我希望它返回的最大数。

cal1和2应该存储一个十进制数,例如0.75,以取消25%的健康状况,这是cal计算应该做的事情,但是当调试它们显示的值为零时,无论随机数是多少。

这应该通过取随机数让我们说从25到25离开75,然后除以100得到一个十进制乘数,然后可以用来减少25%的健康。健康从100开始,所以例如它将导致100 * 0.75,这将使我得到75健康,而是cal一个存储0,结果健康下降到零。

要清楚,cal1和2都是浮点数以允许小数位。

如果有人能指出我可能出错的地方,我将非常感激! 如果我错过了重要的内容,请告诉我,我会尝试解释。

另请注意我只是编程的初学者所以请不要用超复杂的代码打我!

根据要求,random1和2都是整数 PtrPlayer []。健康设置为整数
cal1和2设置为浮点数

2 个答案:

答案 0 :(得分:3)

cal1 = (100 - random1)/100;

由于random1int100int(100 - random1)也是int。在两个整数操作数上使用/运算符时,将执行截断整数除法。

如果您想要浮点除法,请将/的至少一侧转换为浮点类型:

cal1 = (100 - random1) / 100.0f;
//         float literal ^^^^^^

......或......

cal1 = (float)(100 - random1) / 100;

简单地转换除法的结果将没有效果,因为C表达式的类型是由内而外严格确定的。

答案 1 :(得分:0)

尝试将两个100中的任何一个更改为100.0

@if (User.IsInRole("admin")) { }

或者

<?php

session_start();

include_once("config.php");



//empty cart by distroying current session

if(isset($_GET["emptycart"]) && $_GET["emptycart"]==1)

{

    $return_url = base64_decode($_GET["return_url"]); //return url

    session_destroy();

    header('Location:'.$return_url);

}



//add item in shopping cart

if(isset($_POST["type"]) && $_POST["type"]=='add')

{

    $product_code   = filter_var($_POST["product_code"], FILTER_SANITIZE_STRING); //product code

    $product_qty    = filter_var($_POST["product_qty"], FILTER_SANITIZE_NUMBER_INT); //product code

    $return_url     = base64_decode($_POST["return_url"]); //return url







    //MySqli query - get details of item from db using product code

    $results = $mysqli->query("SELECT product_name,price FROM products WHERE product_code='$product_code' LIMIT 1");

    $obj = $results->fetch_object();



    if ($results) { //we have the product info 



        //prepare array for the session variable

        $new_product = array(array('name'=>$obj->product_name, 'code'=>$product_code, 'qty'=>$product_qty, 'price'=>$obj->price));



        if(isset($_SESSION["products"])) //if we have the session

        {

            $found = false; //set found item to false



            foreach ($_SESSION["products"] as $cart_itm) //loop through session array

            {

                if($cart_itm["code"] == $product_code){ //the item exist in array



                    $product[] = array('name'=>$cart_itm["name"],  'code'=>$cart_itm["code"], 'qty'=>$product_qty, 'price'=>$cart_itm["price"]);

                    $found = true;

                }else{

                    //item doesn't exist in the list, just retrive old info and prepare array for session var

                    $product[] = array('name'=>$cart_itm["name"],  'code'=>$cart_itm["code"], 'qty'=>$cart_itm["qty"], 'price'=>$cart_itm["price"]);

                }

            }



            if($found == false) //we didn't find item in array

            {

                //add new user item in array

                $_SESSION["products"] = array_merge($product, $new_product);

            }else{

                //found user item in array list, and increased the quantity

                $_SESSION["products"] = $product;

            }



        }else{

            //create a new session var if does not exist

            $_SESSION["products"] = $new_product;

        }



    }



    //redirect back to original page

    header('Location:'.$return_url);

}



//remove item from shopping cart

if(isset($_GET["removep"]) && isset($_GET["return_url"]) && isset($_SESSION["products"]))

{

    $product_code   = $_GET["removep"]; //get the product code to remove

    $return_url     = base64_decode($_GET["return_url"]); //get return url





    foreach ($_SESSION["products"] as $cart_itm) //loop through session array var

    {

        if($cart_itm["code"]!=$product_code){ //item does,t exist in the list

            $product[] = array('name'=>$cart_itm["name"], 'code'=>$cart_itm["code"], 'qty'=>$cart_itm["qty"], 'price'=>$cart_itm["price"]);

        }



        //create a new product list for cart

        $_SESSION["products"] = $product;

    }



    //redirect back to original page

    header('Location:'.$return_url);

}

?>

这是最简单的选择。