给下面这段代码加上中文注释：#include <stdio.h> #include <stdlib.h> #include <string.h> void menu1(); void create_file(FILE *fp, char *fname); void write_file(FILE *fp, char *fname); void read_file(FILE *fp, char *fname); int main() { system("color F4"); FILE *fp = NULL; int count = 0; char num[100]; int flag1 = 0, flag2 = 0, flag3 = 0; char F_name[20]; while (1) { menu1(); printf("\t请选择你要进行的文件操作："); scanf("%s", num); getchar(); while (strlen(num) > 1 || num[0] < 49 || num[0] > 52) { printf("\t输入错误！请重新输入："); scanf("%s", num); getchar(); } switch (num[0]) { case '1': flag1 = 1; break; case '2': flag2 = 1; break; case '3': flag3 = 1; break; case '4': printf("\n\t"); exit(0); break; } if (flag1 == 1) { flag1 = 0; create_file(fp, F_name); } else if (flag2 == 1) { flag2 = 0; write_file(fp, F_name); } else if (flag3 == 1) { flag3 = 0; read_file(fp, F_name); } } return 0; } void menu1() { printf("\n\n"); printf(" *************************************** \n"); printf("\t \n"); printf(" 文本编辑器 \n"); printf("\t \n "); printf(" *************************************** \n"); printf("\t 1.建立文本 \n"); printf("\t 2.编辑文本 \n"); printf("\t 3.读取文本 \n"); printf("\t 4.退出程序 \n"); printf(" *************************************** \n"); } void write_file(FILE *fp, char *fname) { char ch; printf("\t请输入编辑的文件名：\n\t"); gets(fname); if ((fp = fopen(fname, "w")) == NULL) { printf("\t不能打开文件！\n"); exit(0); } printf("\t请输入内容（以#号键结束）：\n\t"); ch = getchar(); while (ch != '#') { fputc(ch, fp); ch = getchar(); } printf("\n\n"); getchar(); fclose(fp); } void create_file(FILE *fp, char *fname) { printf("\t请输入新建的文件名：\n\t"); gets(fname); if ((fp = fopen(fname, "w+")) == NULL) { printf("\t不能打开文件！\n"); exit(0); } printf("\t%s文件已经创建好！\n\n", fname); fclose(fp); } void read_file(FILE *fp, char *fname) { char ch; printf("\t请输入读取的文件名：\n\t"); gets(fname); if ((fp = fopen(fname, "r")) == NULL) { printf("\t不能打开文件！\n"); exit(0); } printf("\t"); while ((ch = fgetc(fp)) != EOF) { putchar(ch); } printf("\t\n\n"); fclose(fp); }

根据数据结构知识给下面代码添加注释:#include+<stdio.h> #include+<stdlib.h> #include<string.h> #define+MAX_NAME+5 #def

#include <stdio.h> #include <stdlib.h> #include <string.h> #define MAX_NAME 5 #define MAX_DETAIL 10 // 定义结构体 typedef struct { char name[MAX_NAME]; char detail[MAX_DETAIL]; } FamilyMember; ...

根据数据结构的相关知识给以下代码添加注释#include+<stdio.h> #include+<stdlib.h> #include<string.h> #define+MAX_NAME+5 #d

以下是给代码添加注释的示例： c #include <stdio.h> #include <stdlib.h> #include <string.h> #define MAX_NAME 5 // 定义一个常量 MAX_NAME，表示名字的最大长度为 5 int main() { char name[MAX_NAME]; ...

#include <stdio.h> #include <stdlib.h> #include <string.h> #include "search.h" int Search_Seq(SSTable L, KeyType key) {/在静态查找表L中采用顺序查找法，查找其关键字等于key的记录，若找到返回该记录在表中位置，否则返回0/ // 请在这里补充代码，完成本关任务 /****** Begin */ /**** End *

#include <stdio.h> #include <stdlib.h> #include <string.h> #include "search.h" int Search_Seq(SSTable L, KeyType key) { /*在静态查找表L中采用顺序查找法，查找其关键字等于key的记录，若找到返回该记录在...

修改这段代码的错误#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <fcntl.h>#include <termios.h>int main(){ int fd; struct termios options; // 打开串口设备 fd = open("/dev/ttyS1", O_RDWR | O_NOCTTY | O_NDELAY); if (fd < 0) { perror("open"); exit(1); } // 获取当前串口属性 tcgetattr(fd, &options); // 设置波特率为9600 cfsetispeed(&options, B9600); cfsetospeed(&options, B9600); // 设置数据位为8，停止位为1，偶校验 options.c_cflag |= PARENB; // 启用偶校验 options.c_cflag &= ~PARODD; // 设置为偶校验 options.c_cflag &= ~CSTOPB; // 设置停止位为1 options.c_cflag &= ~CSIZE; options.c_cflag |= CS8; // 应用新的串口属性 tcsetattr(fd, TCSANOW, &options); printf("Serial port initialized.\n"); // 读取串口数据 char buf[256]; while (1) { int len = read(fd, buf, sizeof(buf)); if (len > 0) { buf[len] = '\0'; printf("Received: %s\n", buf); } usleep(10000); // 等待10ms } // 关闭串口设备 close(fd); return 0;}

这段代码本身并没有明显的错误，但是缺少了注释和代码结构，不太易读和易懂。以下是经过修改后的代码，增加了注释和代码结构，更易读和易懂： c #include <stdio.h> #include <stdlib.h> #include <string.h> #...

#include <sys/types.h> #include <sys/wait.h> #include <stdlib.h> #include <unistd.h> #include <stdio.h> #include <string.h> main() { int fd[2],pid,pir,n,i; char send[50]="b",receive[50]="b"; pipe(fd); pid=fork(); if(pid==0) { while(send[0]!='a') { printf("Child1 inputs information from keyboard:\n"); scanf("%s",send); lockf(fd[1],1,0); write(fd[1],send,strlen(send)); lockf(fd[1],0,0); sleep(1); } } else { pir=fork(); if(pir==0) { while (receive[0]!='a') { lockf(fd[0],1,0); n=read(fd[0],receive,20); lockf(fd[0],0,0); printf("Child2 received :%s\n",receive); } } else { wait(0); wait(0); printf("parent is kill!\n"); } } } 请给出该代码的注释

#include <stdlib.h> // 包含一些常用函数定义 #include <unistd.h> // 包含进程相关函数定义 #include <stdio.h> // 包含输入输出函数定义 #include <string.h> // 包含字符串操作函数定义 main() { int fd[2],...

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> //#include #include "../include/zcan.h" #include "../include/device.h" #include "../include/Mona_E3.h" #define RX_20_BUFF_SIZE 1000 U8 channel = 0; unsigned gDevType1 = 33;//设备号 unsigned gDevIdx1 = 0;//设备索引 Mona_E3 mona(channel); int main(int argc, char* argv[]){ ZCAN_20_MSG RX_20_buff[RX_20_BUFF_SIZE]; // can buffer U8 XCP_CANFD_Tx_Data[64]; Dev_Init(gDevType1, gDevIdx1, channel); //XCP_CANDF_TX(XCP_CANFD_Tx_Data); U32 ret = Weima_CAN_RX(RX_20_buff); printf("ret = %d\n", ret); for(U32 i=0; i<ret; ++i){ printf("i = %d\n", i); mona.transform(RX_20_buff[i]); } printf("OK\n"); VCI_CloseDevice(gDevType1, gDevIdx1); return 0; }

这是一段C语言代码，包含多个头文件和函数。根据代码中的注释，该程序使用了ZLG...此外，该代码中还有一些注释部分（如#include <pthread.h>），可能是被注释掉的代码或者不需要的库文件，也需要根据具体情况进行调整。

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #define BUFFER_SIZE 1024 int main(int argc, char argv[]) { int client_socket; struct sockaddr_in server_addr; char buffer[BUFFER_SIZE]; char server_ip = "127.0.0.1"; int port = 8888; if(argc > 2) { server_ip = argv[1]; port = atoi(argv[2]); } client_socket = socket(AF_INET, SOCK_STREAM, 0); if(client_socket == -1) { perror("socket"); exit(EXIT_FAILURE); } memset(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = inet_addr(server_ip); server_addr.sin_port = htons(port); if(connect(client_socket, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) { perror("connect"); exit(EXIT_FAILURE); } printf("Connected to server %s:%d\n", server_ip, port); while(1) { fgets(buffer, BUFFER_SIZE, stdin); buffer[strlen(buffer) - 1] = '\0'; if(strcmp(buffer, "quit") == 0) { break; } int send_len = send(client_socket, buffer, strlen(buffer), 0); if(send_len == -1) { perror("send"); break; } } close(client_socket); return 0; }进行注释

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #define BUFFER_SIZE 1024 ...

#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <signal.h> #include <fcntl.h> #include <time.h> #define TIMER_FILE "shijian.txt" #define PID_FILE "daemon.pid" static int running = 1; static int shijian_fd; int main(int argc, char *argv[]) { pid_t pid; pid = fork(); if (pid < 0) { printf("Daemon creation failed\n"); exit(1); } if (pid == 0) { time_t qTime= time(NULL); int pid_fd = open(PID_FILE, O_CREAT | O_RDWR, 0644); if (pid_fd < 0) { perror("Error opening pid file"); exit(EXIT_FAILURE); } if (flock(pid_fd, LOCK_EX | LOCK_NB) < 0) { fprintf(stderr, "Another instance is running\n"); exit(EXIT_FAILURE); } char pid_str[16]; int len = sprintf(pid_str, "%d", getpid()); if (write(pid_fd, pid_str, len) != len) { perror("Error writing pid file"); exit(EXIT_FAILURE); } shijian_fd = open(TIMER_FILE, O_CREAT | O_WRONLY | O_TRUNC, 0644); if (shijian_fd < 0) { perror("Error creating timer file"); exit(EXIT_FAILURE); } if (setsid() < 0) { printf("Background session creation failed\n"); exit(1); } void sigint_handler(int sig) { running = 0; } signal(SIGINT, sigint_handler); while (running) { char rTime[64]; sprintf(rTime, "%ld\n", time(NULL) - qTime+ 1); if (write(shijian_fd, rTime, strlen(rTime)) != strlen(rTime)) { perror("Error writing timer file"); exit(EXIT_FAILURE); } sleep(1); } close(shijian_fd); unlink(PID_FILE); } if (pid > 0){ printf("The ID of the child process is %d\n",pid); } return 0; }优化以上代码，并且重复率降低

#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <signal.h> #include <fcntl.h> #include <time.h> #define TIMER_FILE "shijian.txt" #define PID_FILE ...

#include <stdio.h> #include <stdlib.h> int main(int argc,char ** argv) { char p; int i; p=malloc(30); strcpy(p,"not 30 bytes"); printf("p=<%s>\n",p); if(argc==2){ if(strcmp(argv[1],"-b")==0) p[50]='a'; else if(strcmp(argv[1],"-f")==0){ free(p); p[0]='b'; } } /free(p);*/ return 0; }

这段代码也存在问题，尤其是最后的注释部分，如果取消注释的话，会导致程序崩溃或者出现其他未知的错误，因为p指针已经被释放掉了，但是在注释中又对其进行了释放操作。如果要修正这个问题，可以在最后的注释部分...

编一段过滤注释的c语言代码，输入只可能是1，2，3，4，5之一输入为1则输出第一段代码过滤后的结果，输入为2则输出第二段代码过滤后的结果，依此类推。如果第一段代码是这样： /* @Author: BUPT @Date: 2010 8 26 / #include<stdio.h> int main() { int a = 10 , b = 2 , c ; c = a / b ; //I just want to test '/' printf("I love programming C.\n") ; //"printf" is a useful function / printf("I hope you love it too!\n") ; /* //C is not always hard , if you love it , it will not treat you rough. */ return 0 ; } 则输出是这样： #include<stdio.h> int main() { int a = 10 , b = 2 , c ; c = a / b ; printf("I love programming C.\n") ; printf("I hope you love it too!\n") ; return 0 ; }

#include <stdlib.h> #include <string.h> #define MAX_LINE_LEN 1000 int main(int argc, char *argv[]) { if (argc != 2) { printf("Usage: %s <segment number>\n", argv[0]); exit(1); } int segment_...

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <errno.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#define BUFFER_SIZE 1024int main(int argc, char argv[]) { int client_socket; struct sockaddr_in server_addr; char buffer[BUFFER_SIZE]; char server_ip = "127.0.0.1"; int port = 8888; if(argc > 2) { server_ip = argv[1]; port = atoi(argv[2]); } client_socket = socket(AF_INET, SOCK_STREAM, 0); if(client_socket == -1) { perror("socket"); exit(EXIT_FAILURE); } memset(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = inet_addr(server_ip); server_addr.sin_port = htons(port); if(connect(client_socket, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) { perror("connect"); exit(EXIT_FAILURE); } printf("Connected to server %s:%d\n", server_ip, port); while(1) { fgets(buffer, BUFFER_SIZE, stdin); buffer[strlen(buffer) - 1] = '\0'; if(strcmp(buffer, "quit") == 0) { break; } int send_len = send(client_socket, buffer, strlen(buffer), 0); if(send_len == -1) { perror("send"); break; } int recv_len = recv(client_socket, buffer, BUFFER_SIZE - 1, 0); if(recv_len == -1) { perror("recv"); break; } buffer[recv_len] = '\0'; printf("Received from server: %s\n", buffer); } close(client_socket); return 0;} 添加注释

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #define BUFFER_SIZE 1024 int ...

c语言检查一下下面的代码为什么函数中获取不到键值#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <sys/socket.h> #include <arpa/inet.h> #include <openssl/ssl.h> #include <openssl/err.h> #include <openssl/hmac.h> #include <jansson.h> #include <time.h> #include <errno.h> #include <resolv.h> #include <netdb.h> char* calculate_signature(char* json_str, char* key) { json_t root; json_error_t error; / 从文件中读取 JSON 数据 / root = json_load_file(json_str, 0, &error); / 遍历 JSON 对象中的所有键值对，并获取键的名称 / int key_count = json_object_size(root); printf("key_names %d\n", key_count); const char key_name; json_t value; const char key_names = (const char )malloc(key_count sizeof(char )); int i = 0; json_object_foreach(root, key_name, value) { key_name = json_object_iter_key(value); key_names[i] = key_name; i++; } printf("key_names %s\n", key_names[2]); //int str_num = i; // 计算字符串数组中的字符串数量 / char **sorted_names = sort_strings(key_names, key_count); char* stringA = (char)malloc(1); // 初始化为一个空字符串 stringA[0] = '\0'; size_t len = 0; for (int i = 0; i < str_num; i++) { char key = sorted_names[i]; json_t* value = json_object_get(root, key); char* str = json_dumps(value, JSON_ENCODE_ANY | JSON_COMPACT); len += strlen(key) + strlen(str) + 2; // 2 是键值对之间的字符 stringA = (char)realloc(stringA, len); strcat(stringA, key); strcat(stringA, "="); strcat(stringA, str); strcat(stringA, "&"); free(str); } free(sorted_names); stringA[strlen(stringA) - 1] = '\0'; // 去掉最后一个"&" printf("stringA%s\n", stringA); unsigned char sign = (unsigned char)malloc(EVP_MAX_MD_SIZE); unsigned int sign_len = 0; HMAC(EVP_sha256(), key, strlen(key), (unsigned char)stringA, strlen(stringA), sign, &sign_len); // 计算HMAC-SHA256签名 char* signature = (char)malloc(sign_len 2 + 1); // 签名的十六进制表示 signature[0] = '\0'; // 初始化为一个空字符串 for (int i = 0; i < sign_len; i++) { sprintf(signature + i * 2, "%02x", sign[i]); } json_object_set_new(root, "sign", json_string(signature)); // 在json中添加"sign"参数 json_dumpf(root, stdout, JSON_ENCODE_ANY | JSON_COMPACT); // 输出带有"sign"参数的json字符串 json_decref(root); free(key_names); free(stringA); free(sign); printf("signature%s\n", signature); / return("A"); } int main() { char key="39cabdfaab8c4da09bd6e9823c527836"; char *sss="{\"timestamp\":1685509898,\"sdkVersion\":\"1.0.30_1\",\"vin\":\"LJUBMSA24PKFFF198\"}"; calculate_signature(sss, key) ; }

#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <sys/socket.h> #include <arpa/inet.h> #include <openssl/ssl.h> #include <openssl/err.h> #include <openssl/hmac.h...

#include <stdio.h> #include <stdlib.h> #include <string.h> #include #include <sys/time.h> #include <unistd.h> #include #include <signal.h> #include #include <algorithm> #include <iostream> #include <map> #include <string> #include <queue> #include <vector> #include <sstream> #define LOG_BRASERO_NUM 15 using namespace std; static char g_cpBrasero[] = { (char ) "ID", (char ) "刻录时间", (char ) "刻录机型号", (char ) "光盘属性", (char ) "刻录状态", (char ) "计算机帐户", (char ) "文件名称", (char ) "文件大小", (char ) "文件类型", (char ) "测试1", (char ) "测试2", (char ) "测试3", (char ) "测试4", (char ) "测试5", (char ) "测试6", }; typedef struct _tagBraseroLog { char cpValue[1024]; } BRASEROLOG; int uosaarch_line_parse(char pBuffer) { int index, len,lastLen; int ret = 0; char begin = NULL; char end = NULL; char lastEnd = NULL; //debug printf("进入了扫描"); BRASEROLOG BraseroLog[LOG_BRASERO_NUM]; memset(&BraseroLog, 0, LOG_BRASERO_NUM * sizeof(BRASEROLOG)); for (index = 0; index < LOG_BRASERO_NUM; index++) { begin = strstr(pBuffer, g_cpBrasero[index]); if(NULL == begin) continue; begin=strstr(begin,"="); end = strstr(pBuffer, g_cpBrasero[index + 1]); //end--; if (begin != NULL) { len = strlen("="); unsigned long strSize = end - begin - len ; printf("BraseroLOg[%d]=%s\n",index,BraseroLog[index].cpValue); //strncpy(BraseroLog[index].cpValue, begin + len, std::min(strSize, sizeof(BraseroLog[index].cpValue) - 1))； // printf("PrintLog[%d] = %s\n",index,BraseroLog[index].cpValue); } return 0; } return 1; } int main(){ char a[500] = "ID=1689309873, 刻录时间=2023-07-14 12:44:34, 刻录机型号=TSSTcorp-CDDVDW-SE-218CB-R95M6YMDA00008, 光盘属性=DVD+R, 刻录状态=成功, 计算机帐户=hba, 文件名称=/home/hba/Desktop/刻录测试文件.txt, 文件大小=66 B, 文件类型=文档"; uosaarch_line_parse(a); return 0; }

但是你没有在代码开头包含 <stdio.h> 头文件，所以编译器会发出警告。你需要在开头包含 <stdio.h> 头文件来解决这个问题。 2. 在 uosaarch_line_parse 函数中，你使用了 strstr 函数来查找字符串中的子字符...

帮我添加注释：帮我添加注释：#include <stdio.h> #include <string.h> #include <stdlib.h> #include <stdbool.h> #define N 1000000 int a[N], b[N]; int n = 0; int m = 0; bool check(int x) { int cnt = 0; for (i = 1; i <= n; i++) { if (a[i] < x) { continue; } cnt += 1 + (a[i] - x) / b[i]; if (cnt >= m) { return true; } } return false; } int main() { int i = 0; int t = 0; int mid = 0; printf("请输入两个整数n和m:\n"); scanf("%d %d", &n, &m); for (i = 1; i <= n; i++) { scanf("%d %d", a + i, b + i); } int l = 0; int r = 1e6; while (l < r - 1) { mid = (l + r + 1) >> 1; if (check(mid)) { l = mid; } else { r = mid - 1; } } int x = l; long long res = 0, cc = 0; for (i = 1; i <= n; i++) { if (a[i] < x) { continue; } t = (a[i] - x) / b[i] + 1; if (a[i] - (t - 1) * b[i] == x) { t--; cc++; } if (m >= t) { m -= t; res += (long long)t * (a[i] + a[i] - (t - 1) * b[i]) / 2; } else { t = m; m = 0; res += (long long)t * (a[i] + a[i] - (t - 1) * b[i]) / 2; break; } } res = res + (long long)(m < cc) * x * m; printf("%lld\n", res); return

#include <stdio.h> #include <string.h> #include <stdlib.h> #include <stdbool.h> #define N 1000000 int a[N], b[N]; // 定义两个数组a和b int n = 0; // a和b数组的长度 int m = 0; // 需要选出的数的个数 //...

给下面的代码每一行做注释#include <stdio.h> #include <stdlib.h> #include <string.h> #define MAX_STR_LEN 100 #define MAX_STR_NUM 10 // 比较函数，按照ASCII码从小到大排序 int cmp(const void* a, const void* b) { const char* s1 = *(const char**)a; const char* s2 = (const char)b; return strcmp(s1, s2); } // 排序函数 void sort_str_list(char str_list, int str_num) { // 排序 qsort(str_list, str_num, sizeof(char), cmp); } int main() { char* str_list[MAX_STR_NUM] = { "hello", "world", "apple", "banana", "orange", "cherry", "dog", "cat", "bird", "fish" }; int str_num = sizeof(str_list) / sizeof(char*); // 排序 sort_str_list(str_list, str_num); // 输出排序后的结果 for (int i = 0; i < str_num; i++) { printf("%s\n", str_list[i]); } return 0; }

好的，下面是对代码的每一行的注释： c #include <stdio.h> // 包含标准输入输出头文件 #include <stdlib.h> // 包含标准库头文件 #include <string.h> // 包含字符串头文件 #define MAX_STR_LEN 100 // 宏定义...

帮我补全代码 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #define MAXLINE 4096 int main(int argc, char argv[]) { int sockfd, n; // sockfd是客户端创建的socket描述字，客户端不需要区分监听listenfd和连接connfd。n为发送长度 char recvline[MAXLINE], sendline[MAXLINE]; // recvline暂时没用，sendline为即将发送的数据 struct sockaddr_in servaddr; //创建需要连接的服务端地址 if (argc != 2) { printf("usage: ./client <ipaddress>"); exit(0); } //设置运行时候需要输入的格式，执行文件+服务端ip地址 if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { printf("create socket error:%s(errno:%d)\n", strerror(errno), errno); exit(0); } //创建socket描述字，因为客户端，只需要一次连接 memset(&servaddr, 0, sizeof(servaddr)); //先把当前连接的服务端地址全填充0 servaddr.sin_family = AF_INET; //目的服务端地址协议簇为ipv4 servaddr.sin_port = htons(6666); //设置端口号6666 if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0) { printf("inet_pton error for %s\n", argv[1]); exit(0); } //将目的服务端的地址，转换成网络地址，必须转换成网络地址！！argv[0]是./client，argv[1]是服务端的地址 if (connect(sockfd, (struct sockaddr )&servaddr, sizeof(servaddr)) < 0) { printf("connect socket error:%s(errno:%d)\n", strerror(errno), errno); exit(0); } //创建连接，本机的socket通过服务端地址连接服务端，强转指针格式 printf("send msg to server:\n"); //连接上后输出发送信息到服务端 fgets(sendline, 4096, stdin); //标准输入流中获取需要发送的信息，存储到sendline字符数组中 if (send(sockfd, sendline, strlen(sendline), 0) < 0) { printf("send msg error:%s(errno:%d)\n", strerror(errno), errno); exit(0); } //发送信息，sendline buff中的信息 close(sockfd); //信息发送完关闭自己的sockfd，第一次挥手 exit(0); }

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #define MAXLINE 4096 int main(int argc, char *...

在shell终端中完成对习题 6.5 的调试。习题6.5/badprog.c 错误地访问内存/ #include<stdio.h> #include <stdlib.h> int main(int argc, char **argv) { char *p; int i; p=mal1oc(30); strcpy(P,"not 30 bytes"); printf("p=<%s>\n",p); if(argc==2){ if(strcmp(argv[1],"-b")==0) p[50]='a'; else if(strcmp(argv[1],"-f")==0){ free(p); p[0]='b'; } } /free(p);/ return 0; }

#include <stdio.h> #include <stdlib.h> #include <string.h> int main(int argc, char **argv) { char *p; int i; p = malloc(30); if (p == NULL) { printf("Failed to allocate memory.\n"); return 1; ...

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根据数据结构知识给下面代码添加注释:#include+<stdio.h> #include+<stdlib.h> #include<string.h> #define+MAX_NAME+5 #def

根据数据结构的相关知识给以下代码添加注释#include+<stdio.h> #include+<stdlib.h> #include<string.h> #define+MAX_NAME+5 #d

#include <stdio.h> #include <stdlib.h> int main(int argc,char ** argv) { char *p; int i; p=malloc(30); strcpy(p,"not 30 bytes"); printf("p=<%s>\n",p); if(argc==2){ if(strcmp(argv[1],"-b")==0) p[50]='a'; else if(strcmp(argv[1],"-f")==0){ free(p); p[0]='b'; } } /*free(p);*/ return 0; }

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#include <stdio.h> #include <stdlib.h> int main(int argc,char ** argv) { char p; int i; p=malloc(30); strcpy(p,"not 30 bytes"); printf("p=<%s>\n",p); if(argc==2){ if(strcmp(argv[1],"-b")==0) p[50]='a'; else if(strcmp(argv[1],"-f")==0){ free(p); p[0]='b'; } } /free(p);*/ return 0; }