c - 如何让这个 C 宏工作？

Question

为什么使用 on 和 off 宏会产生问题。我不熟悉使用 c 宏。宏声明是否正确或代码是否存在其他问题。请帮忙 ？？

#include<stdio.h>
#include<stdint.h>

#define ONE 1;             //  OR BY   1 [ 0 0 0 0 0 0 0 1 ] TO insert 1 at LSB position             
#define TWO_FIVE_FOUR 254; // AND BY 254 [ 1 1 1 1 1 1 1 0 ] TO insert 0 at LSB position

#define on(x) (x|ONE)
#define off(x) (x & TWO_FIVE_FOUR)

int main()
{
    uint8_t a=53;

    printf("\nValue of byte a : %d",a );

    printf("\nValue of byte b : %d",on(a)); //Error

    printf("\nValue of byte c : %d",off(a)); //Error

    getchar();

    return 0;
}

Answer 1

去掉宏定义中的分号

#define ONE 1              //  OR BY   1 [ 0 0 0 0 0 0 0 1 ] TO insert 1 at LSB position             
#define TWO_FIVE_FOUR 254  // AND BY 254 [ 1 1 1 1 1 1 1 0 ] TO insert 0 at LSB position