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POProgram breaks when trying to add string to structure
 

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  1. POProgram breaks when trying to add string to structure
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    <p>I just started to learn c++. I got problem with structure. When I am adding data to structure program beaks when it tries to add string to structure. I really don't know where is problem. here is my code:</p> <pre><code> #include "stdafx.h" #include &lt;iostream&gt; #include &lt;string&gt; using namespace std; int main(void) { typedef struct hardware { int id; // will store information string name; int year; float price; hardware *next; // the reference to the next hardware }; hardware *head = NULL; //empty linked list int tempid = 0,tempyear=0, hardware_number = 0, counter = 0; string tempname=""; float tempprice=0; cout&lt;&lt;"Unesite sifru proizvoda:"; cin&gt;&gt;tempid; cout&lt;&lt;"Unesite naziv proizvoda:"; cin&gt;&gt;tempname; cout&lt;&lt;"Unesite godinu proizvoda:"; cin&gt;&gt;tempyear; cout&lt;&lt;"Unesite cijenu proizvoda:"; cin&gt;&gt;tempprice; cout&lt;&lt;"Unijeli ste : ID: "&lt;&lt;tempid&lt;&lt;", naziv: "&lt;&lt;tempname&lt;&lt;", godina: "&lt;&lt;tempyear&lt;&lt;", cijena: "&lt;&lt;tempprice&lt;&lt;", hardware No: " &lt;&lt;++counter; hardware *temp; temp = (hardware*)malloc(sizeof(hardware)); temp-&gt;id = tempid; temp-&gt;name = tempname; temp-&gt;year = tempyear; temp-&gt;price = tempprice; temp-&gt;next = head; head = temp; return 0; </code></pre> <p>EDIT 1: When I run program it compiles fine. After I enter data that will fill structure (id, name, price, year, ...) program breaks on this line</p> <pre><code>temp-&gt;name = tempname; </code></pre> <p>Here is error output: </p> <pre><code>An unhandled exception of type 'System.AccessViolationException' occurred in proba.exe Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. </code></pre>
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    1. COYou don't describe the problem. Does "breaks" mean it doesn't compile, doesn't link, crashes, gives incorrect output, or what? Also what code do you think does this "adding data to structure" that caused your code to break?
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    2. COPlease show the errors. Don't use malloc in c++ (use `new`, and smart pointers). 'stdafx' is for windows programs and isn't standard.
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    3. COAdded error output and showed where program breaks. It compiles but when it reach state when it's adding string to structure it breaks.
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