添加 src/fork.c

src/fork.c

@@ -0,0 +1,15 @@
+#include  <unistd.h>
+#include  <stdio.h>
+#include  <sys/types.h>
+
+int main  () 
+{
+	pid_t  pid;
+	pid=fork();
+	if  (pid  <  0) 
+		printf("error  in  fork!");
+	else  if  (pid  ==  0)
+		printf("i  am  the  child  process,  my  process  id  is  %d\n",getpid());
+	else
+		printf("i  am  the  parent  process,  my  process  id  is  %d\n",getpid()); 
+}