将一个数第i位置1，将一个数第i位置0

#include <stdio.h>int main(){    unsigned char ch=0x5B;    int i;    printf("please inpute number:");    scanf("%d",&i);    ch|=(1<<(i-1));    printf("ch=%#x\n",ch);    return 0;}

#include <stdio.h>int main(){    unsigned char ch=0x5B;    int i;    printf("please inpute number:");    scanf("%d",&i);    ch&=~(1<<(i-1));    printf("ch=%#x\n",ch);    return 0;}