title: Opening a file in c programming in xcode
body: <p>I am trying to write a file to open a file and read the contents of that file in C. I am using xcode but the file pointer returns a value null.</p>
  
  <pre><code>int main(int argc, char** argv)
  {    
      FILE *fp;
      fp=fopen("input.txt","r");
      if (fp==NULL)
          printf("error");
  }
  </code></pre>
  
  <p>This shows error as the output. Could someone help me to find the right place to put the file input.txt in the project?</p>