What is the output of this program #include< stdio h> #include<

What is the output of this program #include< stdio h> #include<...

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What is the output of this program?

#include<stdio.h>
#include<fcntl.h>
 
int main()
{
    int fd, count;
    char ch;
    fd = open("demo.txt",O_RDWR|O_CREAT);
    write(fd,"s",1);
    lseek(fd,0,SEEK_SET);
    write(fd,"d",1);
    lseek(fd,0,0);
    read(fd,&ch,1);
    printf("%c\n",ch);
    return 0;
}

A. d

B. s

C. sd

D. none of the mentioned

Answer: Option D

This Question Belongs to Computer Science >> Linux

What is the output of this program?

`#include<stdio.h> #include<fcntl.h> int main() { int fd, count; char ch; fd = open("demo.txt",O_RDWR|O_CREAT); write(fd,"s",1); lseek(fd,0,SEEK_SET); write(fd,"d",1); lseek(fd,0,0); read(fd,&ch,1); printf("%c\n",ch); return 0; }`

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What is the output of this program #include< stdio h> #include<...

What is the output of this program? #include<stdio.h> #include<fcntl.h> int main() { int fd, count; char ch; fd = open("demo.txt",O_RDWR|O_CREAT); write(fd,"s",1); lseek(fd,0,SEEK_SET); write(fd,"d",1); lseek(fd,0,0); read(fd,&ch,1); printf("%c\n",ch); return 0; }

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What is the output of this program?

`#include<stdio.h> #include<fcntl.h> int main() { int fd, count; char ch; fd = open("demo.txt",O_RDWR|O_CREAT); write(fd,"s",1); lseek(fd,0,SEEK_SET); write(fd,"d",1); lseek(fd,0,0); read(fd,&ch,1); printf("%c\n",ch); return 0; }`