Parse Comma-Separated Integers into an Array

Code

#include <stdio.h>
#include <stdint.h>
#include <math.h>

void parse_csv_to_array(const char *str, uint8_t *arr, uint8_t *count) {
    uint8_t idx = 0;

    char chr = str[idx];
    arr[*count] = 0;

    while (chr != '\0') {
        if (chr == ',') {
            arr[++(*count)] = 0;
        } else if (chr >= '0' && chr <= '9') {
            arr[*count] = (arr[*count] * 10) + (chr - '0');                
        }
        chr = str[++idx];
    }
    (*count)++;
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    uint8_t arr[20];
    uint8_t count = 0;

    parse_csv_to_array(str, arr, &count);

    for (uint8_t i = 0; i < count; i++) {
        printf("%u", arr[i]);
        if(i < count - 1){
            printf(" ");
        }
    }
    return 0;
}

Solving Approach