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7
.vscode/settings.json
vendored
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7
.vscode/settings.json
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{
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"files.associations": {
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"types.h": "c",
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"stat.h": "c",
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"unistd.h": "c"
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}
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}
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0
Code/copy.txt
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0
Code/copy.txt
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67
Code/io.c
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67
Code/io.c
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/****************************************************************
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题目:
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实现文件的拷贝,将一个有数据的文件拷贝它的数据到另一个空白的文件里面。
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*****************************************************************
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先在/home/xk/目录下创建一个origin.txt文件和一个copy.txt文件
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然后在origin.txt文件中写入一些数据
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*****************************************************************/
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#include<stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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int main()
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{
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int open_status;
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int read_status;
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int write_status;
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int close_status;
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char buf[256] = {0};
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//1、打开源文件
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open_status = open("/home/xk/origin.txt", O_RDWR);
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if(open_status == -1)
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printf("打开源文件失败\n");
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else
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printf("打开源文件成功\n");
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//2、拷贝源文件数据
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read_status = read(open_status, buf, sizeof(buf) - 1);
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if(read_status > 0)
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printf("已复制源文件内容为:%s", buf);
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else
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return -1;
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//3、关闭源文件
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close_status = close(open_status);
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if(close_status == 0)
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printf("关闭源文件成功\n\n");
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else
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printf("关闭源文件失败\n\n");
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//4、打开目标文件
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open_status = open("/home/xk/copy.txt", O_RDWR);
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if(open_status == -1)
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printf("打开目标文件失败\n");
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else
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printf("打开目标文件成功\n");
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//5、写入数据到目标文件
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write_status = write(open_status, buf, strlen(buf));
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if(write_status > 0)
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printf("复制成功,有%d个字符\n", write_status);
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else
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return -1;
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//6、关闭目标文件
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close_status = close(open_status);
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if(close_status == 0)
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printf("关闭目标文件成功\n");
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else
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printf("关闭目标文件失败\n");
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return 0;
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}
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56
Code/io2.c
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56
Code/io2.c
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/************************************************
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使用标准IO完成文件拷贝
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************************************************/
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#include<stdio.h>
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int main()
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{
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FILE *fp1, *fp2;
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char buf[256] = {0};
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int read_status, write_status, close_status;
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//1、打开源文件
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fp1 = fopen("./origin.txt", "r");
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if(fp1 == NULL)
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printf("打开源文件失败\n");
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else
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printf("打开源文件成功\n");
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//2、拷贝源文件数据
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read_status = fread(buf, sizeof(char), sizeof(buf) - 1, fp1);
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if(read_status > 0)
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printf("已复制源文件内容为:%s", buf);
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else
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return -1;
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//3、关闭源文件
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close_status = fclose(fp1);
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if(close_status == 0)
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printf("关闭源文件成功\n\n");
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else
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printf("关闭源文件失败\n\n");
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//4、打开目标文件
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fp2 = fopen("./copy.txt", "w");
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if(fp2 == NULL)
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printf("打开目标文件失败\n");
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else
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printf("打开目标文件成功\n");
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//5、写入数据到目标文件
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write_status = fwrite(buf, sizeof(char), read_status, fp2);
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if(write_status > 0)
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printf("复制成功,有%d个字符\n", write_status);
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else
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return -1;
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//6、关闭目标文件
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close_status = fclose(fp2);
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if(close_status == 0)
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printf("关闭目标文件成功\n");
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else
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printf("关闭目标文件失败\n");
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return 0;
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}
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Code/jincheng.c
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39
Code/jincheng.c
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/***************************************************
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子进程每隔1秒打印一次apple,父进程每隔2秒打印一次hello。
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****************************************************/
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#include<stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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int main()
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{
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// 创建子进程
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pid_t pid = fork();
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// 错误处理
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if (pid < 0)
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{
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printf("创建子进程失败\n");
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return -1;
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}
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// 子进程
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else if (pid == 0)
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{
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while (1) {
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printf("apple\n");
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sleep(1); // 每隔1秒打印一次apple
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}
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}
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// 父进程
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else
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{
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while (1) {
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printf("hello\n");
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sleep(2); // 每隔2秒打印一次hello
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}
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}
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return 0; // 程序结束
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}
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Code/jincheng2.c
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52
Code/jincheng2.c
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/**********************************************
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创建一个子进程,打印hello后父进程打印world,之后父进程再创建两条进程,一个进程打印end,另一个进程打印...
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**********************************************/
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/wait.h>
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int main()
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{
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// 创建子进程
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pid_t pid = fork();
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// 错误处理
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if (pid < 0)
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{
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printf("创建子进程失败\n");
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return -1;
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}
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// 子进程
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else if (pid == 0)
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{
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printf("hello\n");
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}
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// 父进程
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else
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{
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wait(NULL); // 等待子进程结束
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printf("world\n");
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// 创建两个新的子进程
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pid_t pid1 = fork();
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if (pid1 == 0)
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{
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printf("end\n");
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}
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else
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{
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pid_t pid2 = fork();
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if (pid2 == 0)
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{
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printf("...\n");
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}
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}
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}
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return 0; // 程序结束
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}
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1
Code/origin.txt
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1
Code/origin.txt
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this is a test
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BIN
Code/output/io
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BIN
Code/output/io
Normal file
Binary file not shown.
BIN
Code/output/io2
Normal file
BIN
Code/output/io2
Normal file
Binary file not shown.
BIN
Code/output/jincheng
Normal file
BIN
Code/output/jincheng
Normal file
Binary file not shown.
BIN
Code/output/jincheng2
Normal file
BIN
Code/output/jincheng2
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Binary file not shown.
BIN
Code/output/xiancheng
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BIN
Code/output/xiancheng
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Binary file not shown.
14
Code/xiancheng.c
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14
Code/xiancheng.c
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#include<stdio.h>
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#include<pthread.h>
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void* start_routine(void* arg)
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{
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printf("Thread is running...\n");
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}
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int main()
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{
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return 0;
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}
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