C语言or和and运算

#include <stdio.h>  
 
void main ()  
{  
    printf("0 | 0 is %d\n", 0 | 0);  
    printf("0 | 1 is %d\n", 0 | 1);  
    printf("1 | 1 is %d\n", 1 | 1);  
    printf("1 | 2 is %d\n", 1 | 2);  
    printf("128 | 127 is %d\n", 128 | 127);  
}   

#include <stdio.h>  
 
void main ()  
{  
    printf("0 & 0 is %d\n", 0 & 0);  
    printf("0 & 1 is %d\n", 0 & 1);  
    printf("1 & 1 is %d\n", 1 & 1);  
    printf("1 & 2 is %d\n", 1 & 2);  
    printf("15 & 127 is %d\n", 15 & 127);  
}   

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