#include <stdio.h>
#include <stdint.h>
// Define macros here
// Enable bit (1 bit at position 0)
#define ENABLE_SHIFT 0
#define SET_ENABLE(val) (((val) & 0x1) << ENABLE_SHIFT)
// Mode field (2 bits at positions 1–2)
#define MODE_SHIFT 1
#define SET_MODE(val) (((val) & 0x3) << MODE_SHIFT)
// Speed field (3 bits at positions 3–5)
#define SPEED_SHIFT 3
#define SET_SPEED(val) (((val) & 0x7) << SPEED_SHIFT)
uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
// Use macros to set fields
uint16_t reg = 0;
reg |= SET_ENABLE(enable);
reg |= SET_MODE(mode);
reg |= SET_SPEED(speed);
return reg;
}
int main() {
uint8_t enable, mode, speed;
scanf("%hhu %hhu %hhu", &enable, &mode, &speed);
uint16_t reg = build_register(enable, mode, speed);
printf("%u", reg);
return 0;
}
Input
1 2 4
Expected Output
37