how can I make my program to freeze in certain conditions .. unless I click "r" it will continue to work ?
To achieve this behavior in your program, you can use a loop that repeatedly checks the conditions and waits for input from the user. Here's an example in Python:
```python
def main():
# Your program logic here
while True:
# Check for certain conditions
if conditions_met():
break # Exit the loop if conditions are met
# Continue working
# Wait for user input
user_input = input("Press 'r' to continue: ")
# Check if user wants to continue
if user_input.lower() == "r":
continue # Continue the loop
else:
break # Exit the loop if user wants to quit
# Clean up and exit the program
if __name__ == "__main__":
main()
```
In this example, the `main` function is where your program logic resides. The loop `while True` will keep repeating until either the conditions are met or the user presses any key other than 'r'. Inside the loop, you can perform your program logic and wait for the user to press 'r' before continuing or exit if the user wants to quit.
Remember to replace `conditions_met()` with your specific conditions that need to be evaluated.