<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[vavanessa的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/vavanessa</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; vavanessa]]></copyright><item><title><![CDATA[判断三个数是否是直角三角形的三条边]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51111147</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51111147</guid><author>vavanessa</author><pubDate>Sun, 10 Apr 2016 08:57:47 +0800</pubDate><description><![CDATA[int main()
{
    float a, b, c;
    scanf("%d%d%d", &a, &b, &c);
    if (a + b > c&&a + c > b&&b + c > a)
    {
        if (pow(a, 2) + pow(b, 2) = pow(c, 2) || pow(a, 2) + pow(c, 2) = pow(b, 2) || pow]]></description><category></category></item><item><title><![CDATA[取绝对值（in c语言）]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51111063</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51111063</guid><author>vavanessa</author><pubDate>Sun, 10 Apr 2016 07:38:52 +0800</pubDate><description><![CDATA[方法1：库函数 
整型abs（） 
长整型labs（） 
浮点型fabs（）方法2：使用条件语句printf（num>0?num:-num）；方法3：用if else语句方法4：利用根号#include<math.h>
num=sqrt(num*num);祝vava今天有好心情，(>^ω^<)]]></description><category></category></item><item><title><![CDATA[不同数据类型之间的运算]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51110990</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51110990</guid><author>vavanessa</author><pubDate>Sun, 10 Apr 2016 04:48:15 +0800</pubDate><description><![CDATA[//#define pi 4.0*atan(1.0)
int main()
{
    int n;
    const double pi = 4.0*atan(1.0);
    scanf("%d", &n);
    printf("%lf %lf", sin(n*pi/180.0),cos(n*pi/180.0));
    //printf("%f %f", sin(n), cos(n)]]></description><category></category></item><item><title><![CDATA[字和字节的区别&&&&如何精确表示pi]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51110970</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51110970</guid><author>vavanessa</author><pubDate>Sun, 10 Apr 2016 03:34:09 +0800</pubDate><description><![CDATA[1.计算机内存中，最小的存储单位是bit（位），8bit构成一个字节（byte）。字节是内存的基本单位，也是编址单位。例如，某计算机内存是2GB，指该计算机内存有2*1024*1024*1024个字节。计算机性能越强，一次运算所能处理的“位”越多。例如16位计算机一次运算能处理16位，即两个字节，称为一个字。而32位计算机中，一个字就是4个字节。


2精确表示pi的方法：const dou]]></description><category></category></item><item><title><![CDATA[int float 定点 浮点他们之间的关系]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51104488</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51104488</guid><author>vavanessa</author><pubDate>Sat, 09 Apr 2016 13:07:59 +0800</pubDate><description><![CDATA[首先int使用补码存在机器里的，属于定点数。
float是按照IEEE754的格式存储的。
因此，int和float之间不能互相转换，但是int和short之间，float和double之间因为存储格式相同，因此是可以转换的。]]></description><category></category></item><item><title><![CDATA[float vs int]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51104384</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51104384</guid><author>vavanessa</author><pubDate>Sat, 09 Apr 2016 12:26:07 +0800</pubDate><description><![CDATA[误认为float和int的区别是精确度的同学注意啦！
float的一般格式是：阶符+阶码数值部分+数符+尾数的数值部分
而int是定点数！
因此，声明了int a之后，是不能scanf（“%f”，&a）；printf（“%f”，a）；的！]]></description><category></category></item><item><title><![CDATA[printf %d能输出最大的数是多少？]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51103089</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51103089</guid><author>vavanessa</author><pubDate>Sat, 09 Apr 2016 06:15:32 +0800</pubDate><description><![CDATA[int main()
{
 float a = 2; int b = 32;
 int x = pow(a, b)-1;
 printf("%d",x );//2^32-1=4294967295
 return 0;
}
的运行结果是：-2147483648
oh my god！]]></description><category></category></item><item><title><![CDATA[scanf输入格式实验&printf语句输出实验]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51103078</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51103078</guid><author>vavanessa</author><pubDate>Sat, 09 Apr 2016 05:29:45 +0800</pubDate><description><![CDATA[在输入时，在输入数据前后添加空格或Tab都不会影响输出的格式和数据。
                               printf("%%d \\n %%d");
输出显示——>       %d \n %d]]></description><category></category></item><item><title><![CDATA[三位数反转的两种方法]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51093046</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51093046</guid><author>vavanessa</author><pubDate>Fri, 08 Apr 2016 03:28:52 +0800</pubDate><description><![CDATA[方法1：分为三种情况：1.n%100==0,则printf("%d",n/100);
                                      2.n%10==0,则printf("%d%d",n%100/10,n/100);
                                      3.else 则printf("%d%d%d",n%10,n%100/10]]></description><category></category></item><item><title><![CDATA[声明与输入的类型不同会怎样]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51027945</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51027945</guid><author>vavanessa</author><pubDate>Thu, 31 Mar 2016 16:49:12 +0800</pubDate><description><![CDATA[图片说明对a,b的声明是一个玻璃瓶，而scanf是倒进去的水，而printf是显示结果，不能改变结果。声明是int而输入double的类型会溢出哦！
stack around the variable “XX” was corrupted.]]></description><category></category></item><item><title><![CDATA[vs2013上运行scanf]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/51022899</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/51022899</guid><author>vavanessa</author><pubDate>Thu, 31 Mar 2016 06:07:52 +0800</pubDate><description><![CDATA[1.在所有include前加上
#define _CRE_SECURE_NO_WARNINGS
2.更改预处理定义：
        项目->属性->配置属性->C/C++ -> 预处理器 -> 预处理器定义，增加：
            _CRT_SECURE_NO_DEPRECATE]]></description><category></category></item><item><title><![CDATA[新的开始]]></title><link>https://blog.youkuaiyun.com/vavanessa/article/details/50984073</link><guid>https://blog.youkuaiyun.com/vavanessa/article/details/50984073</guid><author>vavanessa</author><pubDate>Fri, 25 Mar 2016 21:24:40 +0800</pubDate><description><![CDATA[考研失败，工作不满意，此刻，我很彷徨，但是我知道这是个契机，一个可以推我一把的契机。我喜欢挑战，所以不怕失败。为了成功我愿意付出。从今天开始。我的程序员人生即将拉开序幕。]]></description><category></category></item></channel></rss>