Parse Comma-Separated Integers into an Array

Code

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

void parse_csv_to_array(const char *str, uint8_t *arr, uint8_t *count) {
    // Your logic here
    int i = 0;
    int len = 0; 
    while (str[len] != '\0') {
        int start = len;
        while (str[len] != '\0' && str[len] != ',') {
            len++;
        }
        arr[i] = 0;
        for (int j = start; j < len; j++) {
            if (str[j] >= '0' && str[j] <= '9') {
                arr[i] = arr[i] * 10 + (str[j] - '0');
            }
        }
        i++;
        if (str[len] == ',') {
            len++;
        }
    }
    *count = i;
}

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;
}