输出格式统一

.gitignore

@@ -1,3 +1,4 @@
 build
 .vscode
 .vscode/settings.json
+.DS_Store

client.c

@@ -90,7 +90,7 @@ int main(int argc,char *argv[]) {   //usage: ./client host port
                         else puts("Send file error.");
                     #endif
                     fclose(fp);
-                    printf("Send count:%lld\n", len);
+                    printf("Send count:%u\n", len);
                 } else puts("Open file error!");
             } else {
                 send(sockfd, buf, strlen(buf), 0);

server.c

@@ -152,7 +152,7 @@ int send_all(THREADTIMER *timer) {
             send_data(timer->accept_fd, timer->data, head_len);
             re = sendfile(timer->accept_fd, fileno(fp), &len, file_size) >= 0;
         #endif
-        printf("Send %lld bytes.\n", len);
+        printf("Send %u bytes.\n", len);
         close_dict();
         timer->is_open = 0;
     }