sadhanavs <[EMAIL PROTECTED]> wrote: yes I did it in extern_file.c
--- In [email protected], "Brett McCoy" <[EMAIL PROTECTED]> wrote: > > On 10/4/07, sadhanavs <[EMAIL PROTECTED]> wrote: > > > I have two files extern_function.c and extern_file.c. > > > > // extern_file.c > > > > int x =20; > > int getData() > > { > > return 20; > > } > > > > // extern_function.c > > > > extern int getValue(); > > extern int k; > > int main() > > { > > > > printf("%d\n", getValue()); > > getInput(); > > return 0; > > > > } > > > > int getInput(){ > > printf(" Value:-%d ",k); > > return 0; > > } > > > I don't see anywhere where you define k. You declare it with extern > which means the compiler is expecting it to be defined somewhere else. > Did you mean int k = 20 in the first file? > > > i compile it using gcc. > > > > gcc extern_file.c extern_function.c > > Undefined first referenced > > symbol in file > > k /var/tmp//ccctm19K.o > > ld: fatal: Symbol referencing errors. No output written to a.out > > collect2: ld returned 1 exit status > > > > Why is that the function getValue() works with extern and not k? > > I commented out the printf("%d",k); > > Is there something else i need in order to get the object files linked? > > > > Thanks > > Sadhana > > > > > > > > To unsubscribe, send a blank message to <mailto:[EMAIL PROTECTED]>. > > Yahoo! Groups Links > > > > > > > > > > > -- > ---------------------------------------------------------- > "In the rhythm of music a secret is hidden; > If I were to divulge it, it would overturn the world." > -- Jelaleddin Rumi > hai, this is uday.i have seen ur question.i got ur point.but the u better try returning x instead of 20 directly in first file.ok.any way nice meeting u.u know i have one more sadhana who is my best friend in the world.actually i thought that she has mailed .but after seeing ur mail & mail id i understood.may i know from which place u r?what is ur qualuification?anyway see u later. byeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee --------------------------------- Save all your chat conversations. Find them online. [Non-text portions of this message have been removed]
