可以将十六进制数字与十进制数字相加/相减吗? [英] Can hexadecimal numbers be added/subtracted with decimal numbers?

问题描述

在C语言中编程时，请说我是否将整数h作为十六进制值，并将d作为十进制数.我可以在h和d之间做加法或减法吗?还是必须在同一号码系统中?

When programming in C, say if I have integer h as a hexadecimal value and integer d as a decimal number. Can I do addition or subtraction between h and d? Or do they have have to be in the same number system?

推荐答案

是的，您可以编写:

int x = 100 - 0x100 + 0100;

将十进制与十六进制和八进制混合.无论如何，在计算发生之前，所有值都将转换为二进制值(在此示例中，编译器将进行计算；在运行时不会对其进行评估).并且任何常量都可以替换为分配了适当值的int值:

That mixes decimal with hex and octal. The values are all converted to binary anyway before the calculation occurs (and the compiler will do the calculation in this example; it won't be evaluated at runtime). And any of the constants can be replaced by an int value that was assigned the appropriate value:

int d = 100;
int h = 0x100;
int o = 0100;
int x = d + h + o;

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