C system pause linux

Command system(«pause») not found on Linux

I want to do gui to factorio headless server by myself so i need to exec few bash scripts. I think i need function system() to that ? I think I got problem with lib path. Please don’t blame to wrong installed vcpkg. Paths is :

/opt/factorio/bin/x64/vcpkg/installed /usr/include/c++/9/x86_64-redhat-linux /usr/include/linux /usr/include/c++/9/tr1 

Please, take a look at my answer and, if it helped you, please accept it (green tick beneath the votes) and upvote. If it didn’t help you, write a comment.

system(«pause»); is a Windows-specific hack. My recommendation is that whoever taught you to use that should have a stern talking to.

1 Answer 1

system(«pause»); is meant to be used only on Windows. It runs the Windows command-line «pause» program and waits for that to terminate before it continues execution of your program. That’s why it’s a bad practice to use it in your code, no matter if you are running your code on Windows or Linux.

Here is a better way you can achieve the same result:

#include using namespace std; int main() < do < cout while (cin.get() != '\n'); return 0; > 

#include using namespace std; int main()

Yes but, also i want to exec bash scripts. I tried use system to test for exec bash. So if it is doesnt exist on linux what is the way to launch .sh or make «cat» «ls» «cd» «echo» ?

If you have a bash script you want to execute, then this would help ./script.sh . But I didn’t really understand what you are asking here?

I think you are messing things up. Don’t try to execute bash scripts inside your C++ program because that won’t you give the GUI as you think so. On Linux, your GUI is the terminal.

Actualy no. I didnt downvote your answer. I just waited for better answer or something. I still searching for ways to exec bash script , i thought it is simple. Now i get that command system is useful in WIndows. You replaced «pause» but not way put the command to the terminal. I tried to upvote your answer, because it’s actually smart replace for my code line.

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System Pause C++

The function system (“pause”) is utilized to stop the program at any time or the termination of the code and obtain the outcome of the code on the console terminal. The function system pause in C++ is typically utilized when the user desires to get the outcome in a console window. This supports the user in fixing the code in a good mode and allows the user to get the resultant values at different program phases. In C ++, we utilize the system (“pause”) to implement the operating system’s pause command in the program. Therefore, the user is prompted to tap any key to carry on. If we cannot utilize system pause C++, we may use cin.get() that waits for us to tap any key. When we utilize the system (“pause”) command, it does not work on Linux operating system or Mac. It only works on Windows operating systems. In this article, we discuss the system pause command in C++.

For running the code, we install DEVC++. To run the codes, tap the button F11 from the keyboard.

Usage of System (“Pause”) Command:

The system (“pause”) command is used to execute the pause code. The code is waiting to finish and will stop running the parent C ++ code. The original code will only continue after the pause code ends. If we use a Windows operating system, we can run the following program.

In this example, we utilize two header files: #include and #include . To utilize the system (“pause”) command in the program, we must include the “#include ” header file at the start of the program.

Before decoding a program into machine language, the compiler carries out the header files. Next, we use the main() function. Here, the “For” loop contains three statements. The variable used inside the loop is “k.” We initialize the variable “k” to 1. Then, we apply the test condition k

#include
#include
using namespace std ;
int main ( ) {
for ( int k = 1 ; k < 8 ; k ++ ) {
cout if ( k == 3 ) {

The final statement k++ increments the variable “k” every time the loop is implemented. Even when the “for” loop ends, the variable “k” in the loop is well-defined and has the values assigned in the last increment. Cout is an output function. The double quotation marks surround the message we want to print. The statements in the program end with a semicolon. So, a semicolon is utilized at the end of the cout statement:

As we see, the code is executed, and the first three values of “k” are shown as an output. The system (“pause”) command executes. When we pressed the enter key to continue, it exited the paused code and continued the loop in the code. And by this, we get the next 4 values of k.

Using Cin.get() Function

Cin.get() function is one of the alternatives existing for the system function (“pause”). It will break the execution of the program when needed. After execution, the cin.get() method waits for user input before continuing. As soon as we enter the input, the program will continue to run. This method is helpful if there is a need to enter a value in the code during implementation. This function is a program-level method, and it does not call the operating system to implement the commands. It is a standard library function, so we don’t need to explicitly add a distinct header file. We utilize the cin.get() function as shown below:

#include
using namespace std ;
int main ( )
{
int Values [ 10 ] = { 30 , 50 , 70 , 90 , 110 , 120 , 140 , 160 , 180 , 210 } ;

First, we add a header file in the program. We apply the main function. We take any 10 random numbers and generate an array of these numbers. The variable used inside the loop is “j”. First, we initialize the variable and then apply the test condition. The variable “j” gives the value until it satisfies the given condition. We want to know the position of the value “160”. We utilize the cout function. The message we want to print is “number 160 is present at array position”. In the end, we utilize the cin.get() function:

As the number 160 is present at the 8th position in the array, we get the output 7 because the index of the array starts with 0. So, the digit present at the 8th index shows the 7th position.

System() Function:

The system() is a predefined usual library function. We pass input commands to the system() function, then these commands will be implemented on the operating system terminal. This function calls the Operating System to execute a specific command. This may be very much like launching a terminal and implementing the command with the aid of using a hand:

It is a common approach to test if we can run instructions using a system() in an Operating System. In this program, we should encompass the header file . We include the header file . These header files are applied at the start of the code. We apply the if-else condition. Inside the condition, we utilize the system() function. When we pass a parameter null pointer to the system() function instead of a string, the system() function returns the statement that the command processor is running. Otherwise, the command processor is not running.

Conclusion:

In the article, we talked about system pause C++. We see the program utilizing the system (“pause”) command. It is used to run the pause commands. If we are not sure to use the system (“pause”), then we use the cin.get() function. It also waits for us to enter any value. We have also discussed the system() function. We hope you found this article helpful. Check out other Linux Hint articles for more tips and tutorials.

About the author

Omar Farooq

Hello Readers, I am Omar and I have been writing technical articles from last decade. You can check out my writing pieces.

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Thread: C++: Equivalent of system(«pause»); from Windows in Linux

Tea Glorious Tea!

C++: Equivalent of system(«pause»); from Windows in Linux

What I want to do is pause program execution in the middle of a program and require the user to press a key to continue execution of the program.
Is there a way to do that with Linux?

The world only has as much power over you as you let it have. -camper365
Dell Latitude D630 2.00 GHz Core 2 Duo, Nvidia Quadro 135M 128 MB, 2 GB RAM, Ubuntu Studio Precise
Linux user #489864 Ubuntu user #27303

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Join Date Apr 2006 Location Hamilton, New Zealand Beans 198 —> Beans 198 Distro Ubuntu 9.04 Jaunty Jackalope

Re: C++: Equivalent of system(«pause»); from Windows in Linux

Something like this should do the trick:

int main ( int argc , char * argv [])
<
std :: cout std :: cin . get ();

Has an Ubuntu Drip

Re: C++: Equivalent of system(«pause»); from Windows in Linux

As a general rule, try not to use the system() function in production code. If it’s for yourself, that’s fine. But to the general public, it presents a security risk and generally makes the program OS-specific.

cabalas’s suggestion is a sane one.

Skinny Extra Sweet Ubuntu

Re: C++: Equivalent of system(«pause»); from Windows in Linux

Tea Glorious Tea!

Re: C++: Equivalent of system(«pause»); from Windows in Linux

The world only has as much power over you as you let it have. -camper365
Dell Latitude D630 2.00 GHz Core 2 Duo, Nvidia Quadro 135M 128 MB, 2 GB RAM, Ubuntu Studio Precise
Linux user #489864 Ubuntu user #27303

Tolerant of Ubuntu

Re: C++: Equivalent of system(«pause»); from Windows in Linux

Originally Posted by camper365

That’s probably because you took in input at an earlier stage of your app, and a newline is still sitting in the input stream. cin.get() is happy to gobble it, without actually waiting for you to enter anything.

To clear the input stream, try something like:

std::cin.ignore(1024, '\n'); std::cout 
Has an Ubuntu Drip 
Re: C++: Equivalent of system("pause"); from Windows in Linux
Originally Posted by jimi_hendrix 
Tea Glorious Tea! 
Re: C++: Equivalent of system("pause"); from Windows in Linux
The world only has as much power over you as you let it have. -camper365 
Dell Latitude D630 2.00 GHz Core 2 Duo, Nvidia Quadro 135M 128 MB, 2 GB RAM, Ubuntu Studio Precise 
 Linux user #489864   Ubuntu user #27303 
First Cup of Ubuntu 
Re: C++: Equivalent of system("pause"); from Windows in Linux
as mentioned above, there is still a newline in the stream, so i usually use one of these two methods:

cin.get(); //the first get uses up the newline character 
cin.get(); // with the stream now empty, this one actually waits for a character
cin.ignore(); // ignores the newline 
cin.get(); //waits for character
essentially the same thing, but the latter is more readeable, and logically makes more sense 
Tolerant of Ubuntu 
Re: C++: Equivalent of system("pause"); from Windows in Linux
Originally Posted by robofish114 
as mentioned above, there is still a newline in the stream, so i usually use one of these two methods:
cin.get(); //the first get uses up the newline character 
cin.get(); // with the stream now empty, this one actually waits for a character
cin.ignore(); // ignores the newline 
cin.get(); //waits for character
essentially the same thing, but the latter is more readeable, and logically makes more sense
You brought a thread back to life that has been dormant for more than 3 years! And to boot, your suggestion above is incomplete. There are cases where a user might input more than just a single character and a newline, regardless of what the prompt instructs them to do.
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How to pause in C?
I am a beginner of C. I run the C program, but the window closes too fast before I can see anything. How can I pause the window?
11 Answers 11
before the return from the main function. That will wait for a character input before exiting the program.
Alternatively you could run your program from a command line and the output would be visible.
@John - agreed, especially if your program prints to the console, it would only make sense to run it from the command line.
It depends who you're distributing to. Would also be nice if you can detect the difference between a command line invocation vs double click and act accordingly.
If you want to just delay the closing of the window without having to actually press a button ( getchar() method), you can simply use the sleep() method; it takes the amount of seconds you want to sleep as an argument.
#include // your code here sleep(3); // sleep for 3 seconds 
 
Under POSIX systems, the best solution seems to use:
 
If the process receives a signal whose effect is to terminate it (typically by typing Ctrl + C in the terminal), then pause will not return and the process will effectively be terminated by this signal. A more advanced usage is to use a signal-catching function, called when the corresponding signal is received, after which pause returns, resuming the process.
 
Note: using getchar() will not work is the standard input is redirected; hence this more general solution.
 
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