#include <stdio.h>
    
    struct temp{
        unsigned int zero_bit : 1;
        unsigned int first_bit : 1;
    } ;
    
//    struct temp_1{
//        unsigned int zero_bit : 0;
 //       unsigned int first_bit : 0;
 //   } ;    // Code fails
   
    
    int main() {
    
        struct temp a1;
        printf("%d", a1.zero_bit); // returns 0
    
        return 0;
    }

My question is, why does temp1 struct fail but not temp struct, considering they are both initialized to 0. Why does the compiler give me the false hope that zero_bit has been initialised to a value of 1 when it has been initialized to a value of 0 in reality?