1.printf的输出问题 printf("%d",total);//this is right
printf(total);//this is wrong printf("hello");//but this is right
2.整数类型的长度 char 1个子节,8位 unsigned short [int] [signed] short int
short 2个字节,16位 [signed] int unsigned int int
型在vc里是4个子节,32位,也可能是16位,2个字节 long [int...
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