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

void invert( unsigned int x, int p, int n )
{
    uint8_t mask = 255 >> (p-1);   printf("mask\t%b\n", mask);
    uint8_t tmp = ~(mask >> n);    printf("tmp\t%b\n", tmp);

    mask = mask & tmp;             printf("mask\t%b\n", mask);
    tmp = ~(x & mask);             printf("tmp\t%b\n", tmp);
    x = x & (~mask);               printf("x\t%b\n", x);
    mask = x | mask;               printf("mask\t%b\n", mask);
    x = tmp & mask;                printf("x\t%b\n", x);  
}


int main()
{
    int x = 178;    // 10110010, 2+16+32+128
    int p = 3;
    int n = 4;
    
    invert( x, p, n );

    //printf("%d\n", x);


    return 0;
}