#include <stdio.h>

int main() {
    unsigned int var = 2; //0010               if var = 8 1000 then bit is set
    if((var & (1<<3)) == 0){ // 0010 & ((0001 << 3)=(1000))
                         // 0010 & (1000) == 0
        printf("bit is not set");
    }
    else{
        printf("bit is set");
    }

    int a = 0xA1 //1010 0001 //same just its 8bits of data
    if ((a & (1 << 0)) == 0) {
        printf("bit is not set");
    } else {
    printf("bit is set");
}
}

#if 0

int main(){
    int a=6,b,c,d;// 0110
    
    b=((a || (1<<3))); //delete a bit
    printf("%d",b);
    
    c=((a ^ (1<<3))); // add bit
    printf("\n%d",c);
    
    if((a & (1<<2))==0){ // check bit //((()))
        printf("bit is not set");
    }
    else{
        printf("bit is set");
    }
}
#endif