编码 : Can anyone explain me this why there are different outputs when comparing Least significant bits of two numbers?

Question

谁能解释一下为什么在比较两个数字的最低有效位时会出现不同的输出？
在第一种情况下，我直接比较它们
在第二种情况下，我将 LSB 分配给其他变量

        //Program to check Least significant bits of two numbers 
        #include<stdio.h>
            int main(){

                //LSB means least significant bit of the binary number
                //(i.e.,Unit place digit in binary number) 
                //Example..... 2 = 10(in binary) and 9 = 1001(in binary)  
                //so least significant bit is 0 for 2 and 1 for 9

               //In binary M =101 and LSB of M = 1 
               int M = 5; 
               //In binary P = 011 and LSB of P  = 1
               int P = 3;

               //printing LSB values
               printf("\nLeast significant bits are for M : %d and for P : %d",M&1,P&1);

               //Comparing LSB of M and LSB of P
               if(M&1 != P&1) { 
                   printf("\nLeast significant bits are not equal"); 
               }
               else printf("\nLeast significant bits are equal"); 

               //Assigning Least significant bit of M to MLSB
               int MLSB = M&1; 
               //Assigning Least significant bit of P to PLSB
               int PLSB = P&1; 

               //printing LSB values
               printf("\nValue in MLSB : %d and Value in PLSB : %d",MLSB,PLSB); 

               //Comparing MLSB and PLSB
               if(MLSB != PLSB) { 
                   printf("\nLeast significant bits are not equal"); 
               }
               else printf("\nLeast significant bits are equal"); 


            }

输出:

最低有效位用于 M : 1 和 P : 1
最低有效位不相等
MLSB 中的值:1 和 PLSB 中的值:1
最低有效位相等

Answer 1

尝试改变这个

if(M&1 != P&1) {

进入

if((M&1) != (P&1)) {

然后检查运算符的优先级，例如这里https://en.cppreference.com/w/c/language/operator_precedence