UNIX c++ delay

To introduce a delay in a C++ program running on a UNIX system, you can use the usleep function from the <unistd.h> header file. The usleep function suspends the execution of the program for a specified amount of time, specified in microseconds.

Here are the steps to use the usleep function in C++ on UNIX:

1. Include the <unistd.h> header file at the beginning of your C++ program. This header file provides access to various UNIX system calls, including usleep.

2. Decide on the desired delay duration in microseconds. For example, if you want to introduce a delay of 1 second, you would specify a duration of 1,000,000 microseconds.

3. Call the usleep function and pass the desired delay duration as an argument. For example, if you want to introduce a delay of 1 second, you would call usleep(1000000);.

4. After the usleep function is called, the program execution will be suspended for the specified duration. Once the delay is over, the program will resume execution from where it left off.

It's important to note that the usleep function is considered obsolete and has been replaced by the nanosleep function in newer versions of UNIX. The nanosleep function provides more precise timing capabilities. However, the steps outlined above are still valid for older versions of UNIX or if you specifically need to use usleep.