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
    while(*str != '\0'){
        while(*str < '0' || *str > '9'){
            if(*str == '\0'){
                return;
            }
            str++;
        }

        int number = 0;
        
        while(*str >= '0' && *str <= '9'){
            number = number * 10 + *str - '0';
            str++;
        }

        arr[*count] = number;
        (*count)++;

        if(*str == ','){
            str++;
        }
    }

}

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

 

 

 

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Input

10,20,30

Expected Output

10 20 30