<div>
this is just test file first because i am trying to learn on how to write to a binary file and read it later....<br />
<br />
char *str ={&quot;hello&quot;, &quot;hello2&quot;};<br />
int id=0;<br />
<br />
fwrite(str,1,sizeof(str),f<wbr />p) ;<br />
fwrite(id,1,sizeof(id),fp)<wbr />;<br />
<br />
<br />
<br />
<br />

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<div>
fwrite(&amp;id,1,sizeof(id),fp<wbr />);<br />

</div>


<div>
char *str ={&quot;hello&quot;, &quot;hello2&quot;}; &lt;-- this is declared wrong;<br />
<br />
char* is a pointer to a series of characters. IE 1 string.
</div>


<div>
fwrite(&amp;id,1,sizeof(id),fp<wbr />);<br />
But perhaps you are thinking of<br />
fprintf(fp,&quot;%d &quot;,id);<br />
<br />

</div>


<div>
<div class="content wysiwyg-content">
hi, <br />
<br />
i am using fwrite &nbsp;like this:<br />
<br />
fwrite(str,1,sizeof(str),f<wbr />p) and it works <br />
<br />
but i am having problem when i try to use like this:<br />
fwrite(id,1,sizeof(id),fp)<wbr />;<br />
<br />
<br />
actually, what i am trying to do is to write data like this<br />
<br />
0 id1<br />
1 id2<br />
etc...<br />
<br />
id1 is stored in str and 0 is id in integer...<br />
<br />
i think, i cant write in integer..could anyone pls help? it was fine when tried using text file with fprintf but have a problem with fwrite....<br />
<br />
thanks<br />
<br />
<br />

</div>
</div>


hi, 

i am using fwrite  like this:

fwrite(str,1,sizeof(str),fp) and it works 

but i am having problem when i try to use like this:
fwrite(id,1,sizeof(id),fp);


actually, what i am trying to do is to write data like this

0 id1
1 id2
etc...

id1 is stored in str and 0 is id in integer...

i think, i cant write in integer..could anyone pls help? it was fine when tried using text file with fprintf but have a problem with fwrite....

thanks




this is just test file first because i am trying to learn on how to write to a binary file and read it later....

char *str ={&amp;quot;hello&amp;quot;, &amp;quot;hello2&amp;quot;};
int id=0;

fwrite(str,1,sizeof(str),fp) ;
fwrite(id,1,sizeof(id),fp);






char *str ={&amp;quot;hello&amp;quot;, &amp;quot;hello2&amp;quot;}; &amp;lt;-- this is declared wrong;

char* is a pointer to a series of characters. IE 1 string.

fwrite(&amp;amp;id,1,sizeof(id),fp);
But perhaps you are thinking of
fprintf(fp,&amp;quot;%d &amp;quot;,id);



fwrite - bus error

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.