23 lines
		
	
	
		
			401 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			401 B
		
	
	
	
		
			C
		
	
	
	
	
	
| #include <stdio.h>
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| #include <unistd.h>
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| #include <sys/types.h>
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| #include <sys/wait.h>
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| 
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| int main()
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| {
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|   if (fork() == 0)
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|   { // child proc
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|     printf("%d: child created by parent %d; executing 'p4'...\n", getpid(), getppid());
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|     execl("p4", "p4", NULL);
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|   }
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|   else
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|   { // parent proc
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|     printf("%d: parent process\n", getpid());
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|   }
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| 
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|   fork();
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|   printf("%d: terminating\n", getpid());
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| 
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|   wait(NULL);
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| }
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