Sandeep Hegde

System Software Lab Programs ( UNIX Programs ) – 2b

// March 6th, 2009 // Engineering, Unix and System Software Lab // Written by Sandeep Hegde

Subject : System Software Laboratory

Branch : Information Science & Engineering

Semester : 6

University : VTU

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PART -B

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2. b) C program to create a file with 16 bytes of arbitrary data from the beginning and another 16 bytes of arbitrary data from an offset of 48. Display the file contents to demonstrate how the hole in file is handled.

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#include<stdio.h>

#include<unistd.h>

main()

{

FILE *fp;

int i,j;

char ch;

fp=fopen(“text.txt”,”w”);

ch=’a';

for(i=o;i<16;i++)

{

fwrite(&ch,1,1,fp);

ch++;

}

fseek(fp,48L,1);

ch=’A';

for(j=0;j<16;j++)

{

fwrite(&ch,1,1,fp);

ch++;

}

fclose(fp);

fp=fopen(“text.text”,’r”);

while((fread(&ch,1,1,fp))!=0)

print(“%c”,ch);

fclose(fp);

}

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