How can i repeat a scanf command in C?

here is a section of code i have:





scanf( "%d", %26amp;choice1 ) ;





if ( choice1 %26lt; 1 || choice1 %26gt; 2 )





{


printf( "\n" );


printf( "ERROR: Please select either option 1 or option 2\n" );


printf( "\n" );





}





basically there are 2 options, scanf asks for a choice (either option 1 or 2). If the input value is not a 1 or a 2 it prints the error message but i then want it to go back to the scanf part so the user can have another go at inputting either option 1 or 2. Ive been told i need to use a while loop? any help much appreciated...





thanks

How can i repeat a scanf command in C?
whoever told you to use a while loop is correct...





scanf("%d", %26amp;choice1);





while((choice1 != 1) %26amp;%26amp; (choice1 != 2))


printf("\n");


printf("Error blah blah\n");


scanf("%d", %26amp;choice1);


}
Reply:Yes, a while() loop will work fine. THere are a couple of ways to structure it...





while (choice !=1 %26amp;%26amp; choice!=2) {





...your code...





}





or, you could have a do...while loop...





do {





...your code...


} while ( choice!=1 %26amp;%26amp; choice!=2);





or, you could include the scanf within the while portion.