Thread: debug assertion failed

Code:

if((spData = fopen("in.text", "r")) = NULL)

Look closely at that line. Not sure if it's directly related to your problem however.

Debug assertions usually come with some kind of statement as to what failed, usually in the form of a predicate which evaluated to false.

Say
assert( str != NULL )

Aside from the = issue already mentioned, why are you opening the file twice.

Ok you've created an array of 21 INFO items...

Code:

INFO list[NUM_LINE];

Then you call your function...

Code:

void getData(FILE *spData, INFO list[NUM_LINE])

but you only pass in one item in the array... #21...

However... You have an array of 21 items. In C arrays start at 0, not 1... so an array with 21 items has valid indexes from 0 to 20... not 1 to 21... thus element 21 is actually out of bounds for the array.

You need to pass in a pointer...

Code:

void getData(FILE* spData,INFO *list);

Which you would call as...

Code:

getData(spData,list);

then in your loop you load your array like it's a single struct...

Code:

fscanf(spData,"%s %s %d", list->states, list->cities, list->tempt );

In this case #21... which is out of bounds.

The correct notation is more like...

Code:

fscanf(spData,"%99s %99s %d", list[i].states, list[i].cities, list[i].tempt);