C - Blocks when stdin is not empty
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Is there a function that blocks when the user enters something in stdin? Like, if I just press something on the keyboard it will wait for me to press enter or delete it all. Else if nothing is being typed for about some secs, it will proceed to the next line.
c
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
add a comment |
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Is there a function that blocks when the user enters something in stdin? Like, if I just press something on the keyboard it will wait for me to press enter or delete it all. Else if nothing is being typed for about some secs, it will proceed to the next line.
c
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
Define "enters something".scanfwill block until you press enter.
– Fiddling Bits
Nov 17 '18 at 1:17
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you likencurses.
– Tyler Szabo
Nov 17 '18 at 1:38
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42
add a comment |
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0
0
Is there a function that blocks when the user enters something in stdin? Like, if I just press something on the keyboard it will wait for me to press enter or delete it all. Else if nothing is being typed for about some secs, it will proceed to the next line.
c
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
Is there a function that blocks when the user enters something in stdin? Like, if I just press something on the keyboard it will wait for me to press enter or delete it all. Else if nothing is being typed for about some secs, it will proceed to the next line.
c
c
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
asked Nov 17 '18 at 1:14
John Kevin MercadoJohn Kevin Mercado
11
11
Define "enters something".scanfwill block until you press enter.
– Fiddling Bits
Nov 17 '18 at 1:17
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you likencurses.
– Tyler Szabo
Nov 17 '18 at 1:38
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42
add a comment |
Define "enters something".scanfwill block until you press enter.
– Fiddling Bits
Nov 17 '18 at 1:17
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you likencurses.
– Tyler Szabo
Nov 17 '18 at 1:38
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42
Define "enters something".
scanf will block until you press enter.– Fiddling Bits
Nov 17 '18 at 1:17
Define "enters something".
scanf will block until you press enter.– Fiddling Bits
Nov 17 '18 at 1:17
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you like
ncurses.– Tyler Szabo
Nov 17 '18 at 1:38
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you like
ncurses.– Tyler Szabo
Nov 17 '18 at 1:38
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42
add a comment |
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Define "enters something".
scanfwill block until you press enter.– Fiddling Bits
Nov 17 '18 at 1:17
but it will totally block my code. I want something that if stdin is empty, it will skip it
– John Kevin Mercado
Nov 17 '18 at 1:20
There's a function in readline.h that if I press a specific character without pressing enter, it will do a function. But I want something that if I input some characters without pressing enter, it will wait for me to press enter or delete all of the characters.
– John Kevin Mercado
Nov 17 '18 at 1:24
It sounds like you might need a multi-threaded solution, perhaps? Are you trying to do ongoing processing but allow the user to enter console input while processing? If so there are libraries that can do some of the heavy lifting for you like
ncurses.– Tyler Szabo
Nov 17 '18 at 1:38
Ye I think I just need to use ncurses.h. Thanks
– John Kevin Mercado
Nov 17 '18 at 1:42