scanf problem

[transgalactic2]

when one scanf returns 0
it doesnt enter to none of the other scanf in the program

how to fix it??

[sean]

You have 1450 posts - how do you still not understand how this works? Seriously - stop assuming that the problem is C. The problem is that you don't use C correctly.

POST YOUR CODE! I'll bet you anything there is an error in your code. There is no way for us to know what that error is unless you post your code. scanf returns 0 when it matches 0 items. It probably did exactly what you told it to do. You probably told it to do the wrong thing.

[dwks]

If scanf() doesn't match any items, it leaves the input stream untouched. So if you asked it to read a number, and it couldn't, then it still won't be able to read a number again the next time you ask it, unless you clear the junk out from the input stream. See the FAQ for details (How do I clear the input buffer, or some such).

[transgalactic2]

how do i clear the junk from the input stream??
i tried g=getchar();

still it skips the other scanf 's

[dwks]

Try this.

int c;
while((c = getchar()) != '\n' && c != EOF) {}

It's in the FAQ, as I mentioned. Cprogramming.com FAQ > Flush the input buffer

[MK27]

You can ignore an element in a scanf with the asterisk (*) flag:

int x;
scanf("%d%*c",&x);

Notice there is no variable to receive the second element (%*c), because the asterick (*) means to read this in but ignore it (just like you would use getchar).

[itCbitC]

post what you have and someone will point out how scanf() should be used

[zacs7]

You have 1450 posts - how do you still not understand how this works? Seriously - stop assuming that the problem is C. The problem is that you don't use C correctly.

POST YOUR CODE! I'll bet you anything there is an error in your code. There is no way for us to know what that error is unless you post your code. scanf returns 0 when it matches 0 items. It probably did exactly what you told it to do. You probably told it to do the wrong thing.

Leave him alone, he's writing the FAQ for his book

[Salem]

Oh no, not again.....

[hauzer]

.. My God. Another example that, in most cases, posts are meaningless indicators of potential user knowledge.

[MacGyver]

Leave him alone, he's writing the FAQ for his book

Hmm, I should write a book on programming. Might be an easy way to make money... especially if I can convince braindead professors to use it in their courses.

[ಠ_ಠ]

.. My God. Another example that, in most cases, posts are meaningless indicators of potential user knowledge.

It is very meaningful, if someone has such a high post count and asks such stupid questions it means they're retarded