#include <stdio.h>
#include <stdint.h>
#include <assert.h>
#include <stdlib.h>

void __assert_func(const char *file, int line, const char *func, const char *expr)
{
    printf("%s:%d (%s) assertion failed: %s\n", file, line, func, expr);
    exit(1);
}

int main(void) {
    uint8_t i2c_addr = 1;
    uint16_t mem_addr = 1;
    uint8_t len = 1;
    int ret;

    printf("%d, %d, %d\n", i2c_addr, mem_addr, len);
    //prints: 1,1,1

    const char *cmd = "1 2 3\n";

    // This is the order I intended to scan the string in
    ret = sscanf(cmd, "%hhu %hu %hhu", &i2c_addr, &mem_addr, &len);

    printf("%d- %d, %d, %d\n", ret, i2c_addr, mem_addr, len);
    assert(i2c_addr ==1 && mem_addr == 2 && len == 3);
    // prints: 3- 1,0,3

    // I just swap the order of the target variables around
    ret = sscanf(cmd, "%hhu %hhu %hu", &i2c_addr, &len, &mem_addr);

    printf("%d- %d, %d, %d\n", ret, i2c_addr, len, mem_addr);
    assert(i2c_addr ==1 && len == 2 && mem_addr == 3);
    // prints: 3- 1,2,3

    return 0;
}