{{keywords>wiki library source code example reference}}
===== scanf =====

<code c>
  int scanf(const char *format, ...);
</code>

The function returns the number of items that were successfully read\\
EOF if the input stream reached its end, or a negative number if an error occurs.\\

===== C Sourcecode Example =====
<code c>
/* 
 * scanf example code
 * http://code-reference.com/c/stdio.h/scanf 
 */

#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */


int main ( void )
{
  char input[20];

  printf ("Enter some Text (max 20 chars) ");
  scanf ("%s",input);  
  printf ("Scanf input was %s.\n",input);
  
  return 0;
}
</code>

==== output ====
    output: ./scanf 
    Enter some Text (max 20 chars) Hello this is a test for scanf    
    Scanf input was Hello.

    
    
see also [[c:stdio.h:fscanf|]] [[c:stdio.h:printf|]] [[c:stdio.h:fprintf|]]