--- physmain.c	Sun Aug 27 17:55:04 2000
+++ physmain.c.new	Sun Aug 27 17:55:53 2000
@@ -227,7 +227,7 @@
 				printf("Replace %s = ",v->name);
 				printexpr(v->value);
 				printf(" ?");
-				gets(answer);
+				fgets(answer, sizeof(answer), stdin);
 				printf("\n");
 			} else
 				answer[0] = 'Y';
@@ -711,7 +711,7 @@
 	} else
 		while (TRUE) {
 			printf(">");
-			gets(buf);
+			fgets(buf, sizeof(buf), stdin);
 			do_cmd(buf);
 		}
 }