error: expected identifier before numeric constant

当有下列语句时将出现此状况

 printf("\n\t\tSales as percentage of inventory:\t\t%f".\
      100*((float)total_cars_sold[brand]/(float)
    cars_in_stock[brand]));

57:7: error: expected identifier before numeric constant

原因是\前的不是, 误写成了.

网上查了下还有相关的也出现了此类问题：

转载于:https://www.cnblogs.com/xpchenscoding/archive/2012/03/14/2785518.html