🦄 refactor(C14, C15):

C15-进程/process_basic/primer0.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define LEFT  30000000
+#define RIGHT 30000200
+
+/**
+ * @brief    求质数（单机版）
+ * @details
+ *
+ * @param    argc
+ * @param    argv
+ * @return  int
+ */
+int main(int argc, char **argv)
+{
+    int i, j, mark;
+
+    for (i = LEFT; i <= RIGHT; i++)
+    {
+        mark = 1;
+        for (j = 2; j < i / 2; j++)
+        {
+            if (i % j == 0)
+            {
+                mark = 0;
+                break;
+            }
+        }
+
+        if (mark)
+            printf("%d is a primer\n", i);
+    }
+
+    exit(0);
+}