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1 files changed, 19 insertions, 0 deletions
| -rw-r--r-- | Year 3/System programming/Practice04/ex2.c | 19 |
diff --git a/Year 3/System programming/Practice04/ex2.c b/Year 3/System programming/Practice04/ex2.c new file mode 100644 index 0000000..21f5f0e --- /dev/null +++ b/Year 3/System programming/Practice04/ex2.c @@ -0,0 +1,19 @@ +#include <sys/wait.h> // wait +#include <sys/types.h> // pid_t +#include <stdio.h> // printf +#include <unistd.h> // getpid, getppid, fork + +int main(int argc, char* argv[]) { + printf("%d\n", getpid()); + + pid_t f = fork(); + printf("%d %d\n", f, getpid()); + if (f == 0) { // in child + printf("Parent: %d\n", getppid()); + } + else { + int status; + wait(&status); + printf("Child exit status: %d\n", status); + } +} |