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Previous: System Calls, Up: Program Basics

25.6 Program Termination

The usual way for a program to terminate is simply for its main function to return. The exit status value returned from the main function is used to report information back to the process's parent process or shell.

A program can also terminate normally by calling the exit function.

In addition, programs can be terminated by signals; this is discussed in more detail in Signal Handling. The abort function causes a signal that kills the program.

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