#include <stdio.h>
#include <stdint.h>
/*
In embedded systems, status registers often represent multiple flags using each bit. You are given an 8-bit status register. Each bit corresponds to a different condition.
Bit-to-Flag Mapping
Bit Meaning
0 Power On
1 Error
2 Tx Ready
3 Rx Ready
4 Overheat
5 Undervoltage
6 Timeout
7 Reserved
*/
#define BIT(n) (1 << n)
void decode_status(uint8_t status_reg)
{
if (status_reg & (BIT(0)))
{
printf("Power On\n");
}
if (status_reg & (BIT(1)))
{
printf("Error\n");
}
if (status_reg & (BIT(2)))
{
printf("Tx Ready\n");
}
if (status_reg & (BIT(3)))
{
printf("Rx Ready\n");
}
if (status_reg & (BIT(4)))
{
printf("Overheat\n");
}
if (status_reg & (BIT(5)))
{
printf("Undervoltage\n");
}
if (status_reg & (BIT(6)))
{
printf("Timeout\n");
}
if (status_reg & (BIT(7)))
{
printf("Reserved\n");
}
}
int main()
{
uint8_t reg;
scanf("%hhu", ®);
decode_status(reg);
return 0;
}Solving Approach
Input
13
Expected Output
Power On Tx Ready Rx Ready