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  1. #include<stdio.h>
  2. #include<fcntl.h>
  3. #include<string.h>
  4. #include<unistd.h>
  5. int main()
  6. {
  7.     int fd[2];
  8.     char buf1[25] = "Just a test\n";
  9.     char buf2[50];
  10.     fd[0] = open("file1",O_RDWR);
  11.     fd[1] = open("file2",O_RDWR);
  12.     write(fd[0],buf1,strlen(buf1));
  13.     printf("\nEnter the text now....");
  14.     fgets(buf1,sizeof(buf1),stdin);
  15.     write(fd[0],buf1,strlen(buf1));
  16.     lseek(fd[0],SEEK_SET,0);
  17.     read(fd[0],buf2,sizeof(buf1));
  18.     write(fd[1],buf2,strlen(buf2));
  19.     close(fd[0]);
  20.     close(fd[1]);
  21.     printf("\n");
  22.     return 0;
  23. }
  24.  
Success #stdin #stdout 0s 5288KB
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stdin
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Standard input is empty
stdout
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Enter the text now....
https://ideone.com/UUUblW
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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