Why gets () command is skipped when executing?

Question

I tried to make an input to display the date of birth, name, address, and cellphone number. I use scanf () for the date input and gets () for the name and the like because I want when inputting the space name it will still be displayed as one line input, but when I execute it the program passes the name input and goes straight to the address input. why that thing could happen? and what is the solution?

Please anyone, help me..
https://code.sololearn.com/c60CI92Jt7Wy/?ref=app

Answer 1

Don't use gets(). Forget about it.
https://stackoverflow.com/questions/1694036/why-is-the-gets-function-so-dangerous-that-it-should-not-be-used#:~:text=The%20function%20is%20unsafe%20because,NEVER%20USE%20IT!&text=You%20should%20not%20use%20gets,to%20stop%20a%20buffer%20overflow.&text=The%20correct%20thing%20to%20do,characters%20read%20from%20the%20user.

You can use a scanf for each input or an fgets to store everything at once.

Answer 2

NotAPythonNinja omg you are taking about the same question of stack overflow I posted 😅 they explain exactly that, I didn't read it carefully.
I don't know why, but I considered the new line as a character worth more than a mere space.
All right I am glad of having learnt something new in this discussion.
Thank you 🤗

Answer 3

NotAPythonNinja Using getchar() to correct a new line left in the buffer by the notToUse gets(), when it exists scanf() to properly read the input.

Answer 4

Thanks for helping everyone, i will edit my code tomorrow,time in my country its 22.45 now by the way, i have to go sleep, tomorrow is monday😂

Answer 5

cs_s0uM the code is attached in the question

Answer 6

I think your problem is just reading the input. Change all the gets with scanf and take care of the spaces and new lines left in the buffer.
If you inpit: NAME SURNAME
and read:
scanf("%s", name);
scanf("%s", surname);

Then the second scanf read the space.
You need to do do:
scanf("%s ", name);
With a space in "%s "

Since I don't know how you are giving inputs, I suggest you to add a space everywhere, even for the other inputs. Like scanf("%d ", number);

Answer 7

NotAPythonNinja that's a bad suggesion

Answer 8

Gede Yuda Aditya have you put a space in every scanf?

Answer 9

Gede Yuda Aditya the Idea is to add a space in every place where you expect the user to enter a space or a newline

Answer 10

Correct your program, so that we can tell where you are being wrong

Answer 11

NotAPythonNinja in general the user press "enter" after typing the input, so scanf would not wait

However I read here:
https://stackoverflow.com/questions/19499060/what-is-the-effect-of-trailing-white-space-in-a-scanf-format-string
That %d (and many other conversions) take care of a leading space.
So if you need to read: MY YEARS 13
with a scanf for each word/number you'd better use leading spaces and you don't need any for the number.
By using trailing spaces you would ignore the space between YEARS and 13 two times.
However I couldn't find any evidence of a possible hanging time due to the usage of a trailing space rather than a leading one. Please give evidence, I want to learn.

Answer 12

NotAPythonNinja you can take off the leading spaces from " %d"
Check my previous comment

Answer 13

NotAPythonNinja I got only the phone with Sololearn at the moment.
But I don't think scanf is waiting for a space. I think it may be that the first "enter" is discarded by the trailing space, so you would need a second one to end the output.

Anyway that's a good enough reason to prefer the leading space. Thank you for the evidence 🤗🤗

Answer 14

Gede Yuda Aditya just always put a space before %s like that " %s", that's it

Answer 15

Davide
Thanks for the suggestion, i will try it.

Answer 16

It's only because of how are you giving inputs :
scanf reads upto a space for word, upto a nondigit for Integer,.. gets read entire line upto a new line charecter.. So on using gets after %d by scanf then ex : 9 abc will read fine but ex:
9
abc
Here 9 read as int but \n will read by gets and abc will go to next gets().. So input taking into this consideration.. It works..
Hope it helps....

Answer 17

NotAPythonNinja whoa, thanks

Answer 18

NotAPythonNinja
I am remove that broken code at line 56 and 62, but still the gets(nama) input skiped.

Answer 19

NotAPythonNinja
In Dev c++ sir.

Answer 20

NotAPythonNinja
Owh really, so this problem my be from the editor ?