Read a line from file and store it a string array in C

Question

I have a .txt file like this:

(A+B-C+6-8)
(A*5+4)

And I want to read each line as a string and put them in a string array. For example, str[10] would have the string "(A+B-C+6-8)" as its elements. Then I would do something with the array, then when I'm finished and there would be a new line, the array would reset and store the next line of strings.

What function should I use? fgets? fgetc? fscanf? I'm really confused with all these I/O functions. Thanks!

@herohuyongtao it's a string array named str, with 10 elements. — user3206772, Jan 17 '14 at 13:37
@herohuyongtao oh sorry. I was just making an example. Didn't realize there were 11 characters in the first line. — user3206772, Jan 17 '14 at 13:40

score 2 · Answer 1 · answered Jan 17 '14 at 13:38

2

You should use fgets, to read one line at a time.

answered Jan 17 '14 at 13:38

John Zwinck

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nestedloop · Answer 2 · 2014-01-17T13:50:00.373

1

Get first line:

FILE* myFile = fopen("filename.ext", "r");
size_t maxNoChar = 100;
char * line = malloc(maxNoChar);
if(myFile != NULL)
{
    fscanf("%s", myFile, &line);
}

edited Jan 17 '14 at 13:50

answered Jan 17 '14 at 13:40

nestedloop

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1

please, for EVERY fopen() there has to be the corresponding if(), even in an example answer. – Peter Miehle Jan 17 '14 at 13:45
@PeterMiehle sorry, done. :) – nestedloop Jan 17 '14 at 13:50

Read a line from file and store it a string array in C

2 Answers2