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Hell, you're awesome!!! Could kiss you right away :D

I spent over 5 hours in solving this.

Thank you so much!!!



BTW: Does MS Visual Basic have a much better debugger than Xcode?

long int isnumcheck (char *string)
{
char res[20];

char *rest=res;


strtol(string, &rest, 0);

if (string == NULL)

ggt is gcd (greatest common divisor)

it crashes with:

im to slow in typing ^^

sends the pointers of the integers to the function

edit:
lol now i see it, hell im wondering why it even worked.

i picked the strings, instead of the integers.

But ggt still doesn't work!

but doesnt
if (strcmp(rest, "")==0)

{
return 1;

}

else

yeah i changed to scanf_s

But how do i fix isnumcheck to check for Null, which would be enough or?

okay understand this, but aint i converting the whole char-array, with atoi()

my "isnumcheck" function does check if the string is NULL, it differs between 0 and NULL, and fails if string=NULL, because "rest" is in that case not empty.




I didn't understand this, but if...

ohh you're right! thx, one issue solved ;)

edit:
any tips, how making it less "naive"? :)

Is someone able to help me?

hey guys, i'm pretty new to C, worked with java before.
I thought those two languages are very similar, but the pointers are killing me:

i have to write a c-program which recognizes 5 different...