This question already has answers here:
Capture characters from standard input without waiting for enter to be pressed
(21 answers)
Closed 6 years ago.
I cant use scanf() because to receive integer input you need to press ENTER (when you are running the program).
Use curses library and use getch function to read a key without pressing enter. This works on linux and i think you can also use it on windows
If you are in Windows, then use getch() from conio.h
If you are in Unix/Linux.. you will probably need some terminal/tty adjustments. Check here:
What is Equivalent to getch() & getche() in Linux?
Related
This question already has answers here:
console print w/o scrolling
(7 answers)
Closed 1 year ago.
I have a program that is a simulation, it updates constantly and writes messages in terminal, however, this causes the terminal to constantly scroll with new lines. I am wondering if there is a way to make terminal print lines and then clear after 10 seconds and then update?
Many terminals accept special escape codes allowing the programmer to move the cursor, set the colour and many more functions.
To use it good people wrote the ncurses library https://tldp.org/HOWTO/NCURSES-Programming-HOWTO/
This question already has answers here:
Non blocking getch()
(2 answers)
Closed 3 years ago.
I am making a typing game in C Language in this game letters come from the top of the window and user has to type that letter to delete it and to stop it from touching the specific boundary line if it touches the boundary line user lose points and ultimately lose the game. Now I am having trouble to print the list of the characters and take input at the same time. If I tried to use the scanf() or getch() function they both stop the printing process is there any way that I could get input from a user without stopping the printing process.
Kbhit Function really Works for that problem.
This question already has answers here:
How to simulate an EOF?
(5 answers)
Closed 7 years ago.
How can I input in C language at EOF?
I just want to know the process. I will be very thankful if someone elaborate it by example.
You can have EOF with CTRL+D (for unix) or CTRL+Z (for Windows) from command line.
This question already has answers here:
Difference between scanf and scanf_s
(3 answers)
Closed 8 years ago.
Although my program gives the required output. There are many warnings showing scanf() shouldn't be used and try using scanf_s() instead.
Possible cause of this warning??
This is happening to all the programs which are using the scanf function. Even simple addition of numbers.
With scanf, with some format arguments it is possible to crash your program if you use unlimited size inputs. scanf_s requires to provide size of output buffers, thus limiting possibility of buffer overflows (provided you specify output buffer sizes correctly).
This question already has answers here:
Color text in terminal applications in UNIX [duplicate]
(4 answers)
Closed 8 years ago.
I am using a Solaris server in my engineering course. Running code through SecureCRT and the gcc compiler. A task we have is to have the user input a string, and for the program to reverse it. The input string needs to show up in red, and I do not know what code manipulates colors to screen.
See Image for input /output
I tried running the code from the first link below, and it didnt output in any colors. It still shows all of the words in the standard black and white
Look into ncurses. It's a library built to handle this sort of thing, among other formatting.
start_color() in curses might be a good start.