C，格式为[-Wformat =]错误的未知转换类型字符0x20

Question

printf("\nThe largest dog is %c with a weight of %.2 kg\n", largetype, largest);
fprintf(outfile,"\The largest dog is %c with a weight of %.2f kg\n", largetype , largest);
printf("\nThe smallest dog is %c with a weight of %.2f kg\n", smalltype , smallest);
fprintf(outfile,"\nThe smallest dog is %c with a weight of %.2f kg\n", smalltype , smallest);

你好，

所以我的C程序没有编译，它显示我这个错误，

未知转换类型字符0x20，格式为[-Wformat =]

前两行。 有谁知道如何处理这个错误？

Answer 1

在你的第一行

printf("\nThe largest dog is %c with a weight of %.2 kg\n", largetype, largest);

您正在使用%.2，但是您没有指定类型，这是什么导致转换错误。\ n \ n您应该使用%.2f，就像下面的行一样。

printf("\nThe largest dog is %c with a weight of %.2f kg\n", largetype, largest);