how to wait for a key press in R

You can wait for a key press in R using the readline() function. Here are the steps to do this:

1. Use the readline() function to prompt the user to press a key.
2. Store the input from the user in a variable, for example, key_press.
3. The program will wait for the user to press enter after inputting the key.

This process allows the program to pause and wait for user input before continuing with the execution.