<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[西门吹雪博客]]></title><description><![CDATA[把无兴趣的事变成有兴趣的事]]></description><link>https://blog.youkuaiyun.com/q_tnt</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; q_tnt]]></copyright><item><title><![CDATA[创建指定大小文件]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/93784407</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/93784407</guid><author>q_tnt</author><pubDate>Wed, 26 Jun 2019 21:45:15 +0800</pubDate><description><![CDATA[# coding:utf-8
import os
import re

def createfile(size):
    UpperSize = str(size).upper()
    val = re.findall(r'^(\d+)[KM]?',UpperSize,re.I)
    if val:
      val = int(val[0])
      if 'K' in Upp...]]></description><category></category></item><item><title><![CDATA[python 画柱状图 尝试]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/81074253</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/81074253</guid><author>q_tnt</author><pubDate>Tue, 17 Jul 2018 01:07:31 +0800</pubDate><description><![CDATA[
# -*- coding=utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt
import re

plt.rcParams['font.sans-serif']=['SimHei'] #用来正常显示中文标签
plt.rcParams['axes.unicode_minus']=False #用来正常显示负号

def dra...]]></description><category></category></item><item><title><![CDATA[数组指针和指针数组的区别]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/52255225</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/52255225</guid><author>q_tnt</author><pubDate>Sat, 20 Aug 2016 00:02:05 +0800</pubDate><description><![CDATA[数组指针和指针数组的区别



数组指针（也称行指针）
定义 int (*p)[n];
()优先级高，首先说明p是一个指针，指向一个整型的一维数组，这个一维数组的长度是n，也可以说是p的步长。也就是说执行p+1时，p要跨过n个整型数据的长度。


如要将二维数组赋给一指针，应这样赋值：
int a[3][4];
int (*p)[4]; //该语句是定义一个数组指针，指向含4]]></description><category></category></item><item><title><![CDATA[dbFS计算]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/52254450</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/52254450</guid><author>q_tnt</author><pubDate>Fri, 19 Aug 2016 21:59:57 +0800</pubDate><description><![CDATA[#include 
#include 
#include 

int main(int argc, char ** argv)
{
	long double val = 0;//功率相对值
	long double pwr = 0;//化为dbFS值

	int i;
	for (i = 1; i < argc; i++)//系统默认第一个参数为程序名CalcPwr.exe
	{
		val =]]></description><category></category></item><item><title><![CDATA[memset赋值]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/51958562</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/51958562</guid><author>q_tnt</author><pubDate>Tue, 19 Jul 2016 19:01:44 +0800</pubDate><description><![CDATA[问题
#define MAX 100000
const int MAXN = 5; 
int len[MAXN][MAXN]; 
memset(len,MAX,sizeof(len))；//失败，并不能让len数组所有的值是100000，而是-1600085856
memset(len,-1,sizeof(len))//成功，并且len所有的值都是-1；
memset(len,-2,sizeof]]></description><category></category></item><item><title><![CDATA[DSP BIOS任务通信和同步（pend/post举例）]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/51871241</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/51871241</guid><author>q_tnt</author><pubDate>Sun, 10 Jul 2016 13:56:07 +0800</pubDate><description><![CDATA[pend/post举例]]></description><category></category></item><item><title><![CDATA[程序语言设计3day EOF]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/51817034</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/51817034</guid><author>q_tnt</author><pubDate>Sun, 03 Jul 2016 21:30:14 +0800</pubDate><description><![CDATA[输入输出字符
#include 
#include "tsk.h"

#define Hmax 300 //温度up limit
#define STEP 20
#define PINEOF //EOF打印标志

void main(void)
{
	show();
	//	testH2S();//华氏摄氏温度转换测试

#ifdef HELLO
	printf("Hello world !\n]]></description><category></category></item><item><title><![CDATA[程序语言设计（第二天学习）]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/51816713</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/51816713</guid><author>q_tnt</author><pubDate>Sun, 03 Jul 2016 20:23:06 +0800</pubDate><description><![CDATA[华氏摄氏温度转换
头文件：
//#pragma once

int n = 0;//控制温度显示次数为一次
void H2S(float *h, float *s);//h 华氏； s摄氏
void testH2S(void);

主函数：
#include 
#include "tsk.h"

void main(void)
{
	testH2S();

#ifdef HELLO
	p]]></description><category></category></item><item><title><![CDATA[程序语言设计（第一天学习）]]></title><link>https://blog.youkuaiyun.com/q_tnt/article/details/51815185</link><guid>https://blog.youkuaiyun.com/q_tnt/article/details/51815185</guid><author>q_tnt</author><pubDate>Sun, 03 Jul 2016 14:58:25 +0800</pubDate><description><![CDATA[转义字符:
\n 换行
\t 制表符
\b 回退符
\“ 表示双引号
\\ 反斜杠符本身
【测试】

#include 


void main(void)
{
	printf("Hello world !\n");
	printf("Hello world \t !\n");//空5格
	printf("Hello world \b !\n");//回退一格
	printf("H]]></description><category></category></item></channel></rss>