How to Pause Program Execution in C Using a Sleep Function

Pausing Program Execution in C with the Sleep Function

Many programming languages offer a sleep function to pause program execution for a specified duration. In C , the corresponding function is slightly different.

Question:

How can we pause a C program for a certain number of milliseconds using a sleep function?

Answer:

In C , the standard library provides the std::this_thread::sleep_for function to achieve this. Here's how to use it:

1. Add the following headers:

   <code class="cpp">#include <chrono>
   #include <thread></code>

2. Create a std::chrono::milliseconds object representing the desired duration:

   <code class="cpp">std::chrono::milliseconds timespan(111605); // or any desired value</code>

3. Pause the program for the specified duration using std::this_thread::sleep_for:

   <code class="cpp">std::this_thread::sleep_for(timespan);</code>

Pre-C 11 Sleep Functions:

Before C 11, C didn't have a standard sleep function. Here are some platform-dependent options:

1. Windows: Sleep(milliseconds) in
2. Unix: usleep(microseconds) in

However, a better pre-C 11 method is to use the Boost library: boost::this_thread::sleep.

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