- #include <stdio.h> 
- #include <stdint.h> 
-   
- #define ALERT1_CHECK (0b0001) 
- #define ALERT2_CHECK (0b0010) 
- #define ALERT3_CHECK (0b0100) 
- #define ALERT4_CHECK (0b1000) 
-   
- int main(void) { 
- 	uint8_t ret = 0; 
-   
- 	ret |= ALERT1_CHECK; 
- 	ret |= ALERT2_CHECK; 
- 	ret |= ALERT3_CHECK; 
- 	ret |= ALERT4_CHECK; 
-   
- 	return 0; 
- } 
-   
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