Parse Comma-Separated Integers into an Array

Code

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

int convert_arr(char *s,char *e){
    int res = 0;
    while(s<=e){
        res = res*10 + (*s - '0');
        s++;
    }
    return res;
}

void parse_csv_to_array(char *str, uint8_t *arr, uint8_t *count) {
    char *start = str;
    char *end;
    int i = 0;

    while(*str){
        if(*str == ','){
            end = str-1;
            arr[i++] = convert_arr(start,end);
            start = str+1;
        }
        str++;
    }

    arr[i++] = convert_arr(start,str-1);
    *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;
}

Solving Approach