#include "string.h" #include "ctype.h" #include "stdio.h" search(char pd[]) {FILE *fp; int time=0,i=0,j=0,add[80],k=0,m; char *ch, str[900]; m=strlen(pd); if((fp=fopen("haha.txt","r"))==NULL) { printf("Cannot open this file\n"); exit(0); } for(;!feof(fp);i++) { str[i]=fgetc(fp); if(tolower(str[i])==tolower(pd[k])) {k++; if(k==m) if(!isalpha(i-m)&&!isalpha((str[i++]=fgetc(fp)))) { time++; add[j]=i-m+1; j++; k=0; } else k=0; } } if(time) { printf("The time is:%d\n",time); printf("The adders is:\n"); for(i=0;i<j;i++) printf("%5d",add[i]); if(i%5==0) printf("\n"); getch(); fclose(fp); } else printf("Sorry!Cannot find the word(^_^)"); } main() { char pd[10],choose='y'; int flag=1; while(flag) {printf("In PUT the word you want to seqarch:"); scanf("%s",pd); search(strlwr(pd)); printf("\nWould you want to continue?(Y/N):"); getchar(); scanf("%c",&choose); if((tolower(choose))=='n') flag=0; else flag=1; } printf("Thanks for your using!Bye-bye!\n"); getch(); }
标签： 学生专用
上传时间： 2016-12-29
上传用户：767483511
A decade ago, I first wrote that people moved, and networks needed to adapt to the reality that people worked on the go. Of course, in those days, wireless LANs came with a trade-off. Yes, you could use them while moving, but you had to trade a great deal of throughPUT to get the mobility. Although it was possible to get bits anywhere, even while in motion, those bits came slower. As one of the network engineers I worked with PUT it, “We’ve installed switched gigabit Ethernet everywhere on campus, so I don’t understand why you’d want to go back to what is a 25-megabit hub.” He un- derestimated the allure of working on the go.
上传时间： 2020-05-26
上传用户：shancjb
This book was born from the perception that there is much more to spectrum use and sharing than one sees reflected in publications, whether academic, commercial or political. the former – in good research style – tend towards reductionism and concentrate on specific, detailed aspects. commercial publications tend to empha- size the positive aspects and they tend to PUT promise above practice. Given the ever increasing pace of technology development and recent successes of new wireless technologies, some pundits predict large-scale spectrum scarcity, potentially lead- ing to economic catastrophe. Although economic theory has a hard time explaining recent events that shook the world economy, the notion of spectrum scarcity is intui- tively acceptable, even if not correct or immediately relevant.
上传时间： 2020-06-01
上传用户：shancjb
The ability to analyze system or circuit behavior is one of the key requirements for successful design. To PUT an idea to work, a designer needs both the knowledge and tools for analyzing the behavior of that new system architecture or that experi- mental circuit topology. Design decisions are grounded on the results obtained from analysis.
上传时间： 2020-06-01
上传用户：shancjb
Each of us is interested in optimization, and telecommunications. Via several meetings, conferences, chats, and other opportunities, we have discovered these joint interests and decided to PUT together this book.
标签： Telecommunications optimization heuristics
上传时间： 2020-06-01
上传用户：shancjb
The explosion in demand for wireless services experienced over the past 20 years has PUT significant pressure on system designers to increase the capacity of the systems being deployed. While the spectral resource is very scarce and practically exhausted, the biggest possibilities are predicted to be in the areas of spectral reuse by unlicensed users or in exploiting the spatial dimension of the wireless channels. The former approach is now under intense development and is known as the cogni- tive radio approach (Haykin 2005).
标签： Multi-Antenna Wireless Channels Modeling
上传时间： 2020-06-01
上传用户：shancjb
As a student I did my best to avoid text books – a strange statement for a Professor to make and one that I should clarify before you PUT this book down; I did my best to avoid text books that did not help me.
标签： Microdevices Ceramic Thick Films MEMS for and
上传时间： 2020-06-06
上传用户：shancjb
The Raspberry Pi has become a comPUTing phenomenon. This single-board miniature comPUTer, first released in February 2012 by the Raspberry Pi Foundation, has grown into a series of nearly a dozen models that have sold a total of more than 10 million units in five years. Inexpensive to buy and to run, Raspberry Pi comPUTers are great for enthusiasts, good for games, and fun for children. Raspberry Pi comPUTers are also terrific in the classroom, enabling you to PUT on each desk an easily-manageable comPUTer on which students can do everything from learning Internet use and essential office software skills, through grasping programming basics in an easy-to-learn format, to performing full-on programming in Python, Java, C, and other languages. Better yet, you can install all the software needed for those activities automatically alongside the operating system.
标签： Deploying Classroom Raspberry the Pi in
上传时间： 2020-06-06
上传用户：shancjb
电子电路单片机设计毕业设计论文资料软硬件设计50例资料合集资料0652、14093组成的脉宽调制器电路（电机调速）.rar0653、CMOS单通道调制电路.rar0654、DC-AC变换器.rar0655、DC-AC变换器LCD显示电子温度计.rar0656、DC-AC变换器PWM控制式电机速度控制电路.rar0657、DC-AC变换器TC4069UB组成的方波振荡器.rar0658、DC-AC变换器按钮型游戏基准电路.rar0659、DC-AC变换器变形多谐振荡器.rar0660、DC-AC变换器标准多谐振荡器.rar0661、不规则变换循环LED闪烁电路.rar0662、采用3524的PWM式电机速度控制电路.rar0663、超声波鱼缸加氧器.rar0664、车辆转向灯电路.rar0665、出租车空车灯LED环形闪烁电路.rar0666、触摸调光灯.rar0667、触摸开关.rar0668、触摸控制定时器.rar0669、触摸控制转换开关.rar0670、串联式多谐振荡器.rar0671、串入式声控延时开关.rar0672、单结晶体管多谐振荡器.rar0673、单脉冲控制转换开关.rar0674、单脉冲控制转换开关基本电路.rar0675、单稳态多谐振荡器.rar0676、单稳态多谐振荡器组成的定时器电路.rar0677、单轴操纵杆接口电路.rar0678、低电平输出光控电路.rar0679、第三刹车灯电路.rar0680、电场与漏电检测器.rar0681、电动车充电自动控制电路.rar0682、电话机检修测试仪.rar0683、电话检修仪.rar0684、电子节拍器.rar0685、电子锁.rar0686、电子音乐门铃.rar0687、短波无线监听发射器1（100MHz）.rar0688、短波无线监听发射器2（100MHz）.rar0689、短路检测式报警电路.rar0690、断线检测式报警电路.rar0691、断线式防贼报警电路.rar0692、断续音报警信号发生器.rar0693、多功能密码锁.rar0694、多谐—张弛振荡器.rar0695、发射极耦合式多谐振荡器.rar0696、方波发生器.rar0697、非对称多谐振荡器.rar0698、峰谷用电定时器.rar0699、改进型发射极耦合式多谐振荡器.rar0700、改进型模拟PUT(可编程单结晶体管)器件振荡器.rar
上传时间： 2021-12-10
上传用户：
The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the inPUT supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2µA. The PW4055 can be PUT into shutdown mode, reducing the supply current to 25µA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an inPUT voltage
标签： pw4055
上传时间： 2022-02-11
上传用户：jason_vip1
