How to populate arrays from file contents?

Asked May 05 '18 at 22:06

Active May 05 '18 at 22:28

Viewed 54 times

I want to read the contents of a file and sort them. The input file has a single column and records three attributes so it's like:

11579704
Man
Leo
11579704
Man
Joey
11579704
Man
Franny
11579704
Auto
Lucy
18919736
Man
Jose

I've set up 3 arrays and I want to populate each array with one of the criteria i.e. an array for all Car plates.

FILE* filePtr = fopen("vehicle.txt", "r");

while (!feof(filePtr)) /* while not End of File */
{
fscanf(filePtr, "%s%s%s", InputFileArray1[i], InputFileArray2[i], InputFileArray3[i]);
i++; /* increment counter */

} /*end while */

Should the above read from the file and populate the arrays or is it rubbish???

edited May 05 '18 at 22:28

Yunnosch

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asked May 05 '18 at 22:06

user9746835

https://stackoverflow.com/questions/5431941/why-is-while-feof-file-always-wrong – Yunnosch May 05 '18 at 22:13
What do you expect between the three sequences of non-whitespace? `%s%s%s` You might want to use strtok() instead. Please show sample input. – Yunnosch May 05 '18 at 22:15
http://sekrit.de/webdocs/c/beginners-guide-away-from-scanf.html https://stackoverflow.com/questions/35178520/how-to-read-parse-input-in-c-the-faq – Yunnosch May 05 '18 at 22:30
Who or what text suggested using `while (!feof(filePtr))`? – chux - Reinstate Monica May 05 '18 at 23:53
what should I use? – user9746835 May 06 '18 at 00:23

How to populate arrays from file contents?

0 Answers0