18 lines
383 B
C
18 lines
383 B
C
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#include <sys/wait.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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int main()
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{
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int status;
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pid_t p = getpid();
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// waitpid takes a children's pid, not the current process one
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// if the pid is not a children of the current process, it returns -ECHILD
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pid_t res = waitpid(1001, &status, WNOHANG);
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printf("res is %d, p is %d and errno is %d\n", res, p, errno);
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}
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