Getting multiple lines of input with scanf() in c

Question

I am trying to grab multiple lines of input with scanf, all the lines have the same formatting example line:

1, 05:05:04, 1, 1103

the current code I have grabs only one line

scanf(" %d, %d:%d:%d, %d, %d", int1, int2, int3, int4, int5, int6);

If you want to read *lines*, don't use `scanf`. (Actually, just avoid using `scanf` in general. http://www.c-faq.com/stdio/scanfprobs.html ) — jamesdlin, Apr 20 '13 at 09:28
possible duplicate of [Reading multiple lines of input with scanf()](http://stackoverflow.com/questions/13592875/reading-multiple-lines-of-input-with-scanf) — user2284570, Mar 24 '15 at 21:24

mohit · Answer 1 · 2013-04-20T09:26:23.953

2

Are you looking for this?

while (scanf("%d,%d:%d:%d,%d,%d",
           &int1, &int2, &int3, &int4, &int5, &int6) == 6) {
    //use int1, int2, int3, int4, int5, int6
}

edited Apr 20 '13 at 09:26

answered Apr 20 '13 at 09:18

mohit

2

+1, but I'd completely remove white space from the format string: `"%d,%d:%d:%d,%d,%d"`. The conversion `"%d"` already includes leading whitespace on its own. – pmg Apr 20 '13 at 09:24

score 0 · Answer 2 · answered Apr 20 '13 at 09:20

0

This scanfs 2 lines:

scanf("%d, %d:%d:%d, %d, %d\n%d, %d:%d:%d, %d, %d", &int1, &int2...)

answered Apr 20 '13 at 09:20

red_eyes

score -2 · Answer 3 · answered Apr 20 '13 at 09:19

-2

You can try using a for loop. So it would be

for (int i =0; i < NumberOfLines;i++) { scanf(" %d, %d:%d:%d, %d, %d", int1, int2, int3, int4, int5, int6); }

answered Apr 20 '13 at 09:19

James Byrne

3 Answers3