if((pid =fork())<0)
时间: 2024-06-03 15:08:00 浏览: 13
This line of code is used in C programming language to create a child process using the fork() function. The fork() function creates a new process by duplicating the calling process. The new process is referred to as the child process, while the original process is referred to as the parent process.
The if statement checks if the return value of fork() is less than 0. If this condition is true, it means that the fork() function has failed to create a new process. In this case, the program will terminate or handle the error in some other way.
If the return value of fork() is greater than or equal to 0, it means that the fork() function has successfully created a child process. The value of pid will be 0 in the child process and greater than 0 in the parent process.
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