#include <stdio.h>
 #include <stdint.h>
    int main()
    {
        int power;
        int hr;
        int cadence;
        sscanf("204 67 94","%d %d %d",&power, &hr, &cadence);
        printf("power: %d, hr: %d, cadence: %d", power, hr, cadence);
        return 0;
    }

power: 204, hr: 67, cadence: 94

...Program finished with exit code 0
Press ENTER to exit console.

#include <stdio.h>
#include <stdint.h>
int main()
{
    uint16_t power;
    uint8_t hr;
    uint16_t cadence;
    sscanf("204 67 94","%d %d %d",&power, &hr, &cadence);
    printf("power: %d, hr: %d, cadence: %d", power, hr, cadence);
    return 0;
}

power: 0, hr: 67, cadence: 94

...Program finished with exit code 0
 Press ENTER to exit console.