Easy - Electronics Shop.c

#include assert.h
#include limits.h
#include math.h
#include stdbool.h
#include stdio.h
#include stdlib.h
#include string.h

char readline();
char split_string(char);


  Complete the getMoneySpent function below.
 

int getMoneySpent(int keyboards_count, int keyboards, int drives_count, int drives, int b)
{
    int mostExp=0;
    int curr=0;

    for(int i=0; ikeyboards_count ;i++)
    {
        for(int j=0; jdrives_count; j++)
        {
            curr = drives[j] + keyboards[i];
            if(curr = mostExp)
            {
                mostExp = ((curr  b)   mostExp  curr);
            }

        }
    }
    return (mostExp==0)  -1  mostExp;
}

int main()
{
    FILE fptr = fopen(getenv(OUTPUT_PATH), w);

    char bnm = split_string(readline());

    char b_endptr;
    char b_str = bnm[0];
    int b = strtol(b_str, &b_endptr, 10);

    if (b_endptr == b_str  b_endptr != '0')
    {
        exit(EXIT_FAILURE);
    }

    char n_endptr;
    char n_str = bnm[1];
    int n = strtol(n_str, &n_endptr, 10);

    if (n_endptr == n_str  n_endptr != '0')
    {
        exit(EXIT_FAILURE);
    }

    char m_endptr;
    char m_str = bnm[2];
    int m = strtol(m_str, &m_endptr, 10);

    if (m_endptr == m_str  m_endptr != '0')
    {
        exit(EXIT_FAILURE);
    }

    char keyboards_temp = split_string(readline());

    int keyboards = malloc(n  sizeof(int));

    for (int keyboards_itr = 0; keyboards_itr  n; keyboards_itr++)
    {
        char keyboards_item_endptr;
        char keyboards_item_str = (keyboards_temp + keyboards_itr);
        int keyboards_item = strtol(keyboards_item_str, &keyboards_item_endptr, 10);

        if (keyboards_item_endptr == keyboards_item_str  keyboards_item_endptr != '0')
        {
            exit(EXIT_FAILURE);
        }

        (keyboards + keyboards_itr) = keyboards_item;
    }

    int keyboards_count = n;

    char drives_temp = split_string(readline());

    int drives = malloc(m  sizeof(int));

    for (int drives_itr = 0; drives_itr  m; drives_itr++)
    {
        char drives_item_endptr;
        char drives_item_str = (drives_temp + drives_itr);
        int drives_item = strtol(drives_item_str, &drives_item_endptr, 10);

        if (drives_item_endptr == drives_item_str  drives_item_endptr != '0')
        {
            exit(EXIT_FAILURE);
        }

        (drives + drives_itr) = drives_item;
    }

    int drives_count = m;

    
      The maximum amount of money she can spend on a keyboard and USB drive, or -1 if she can't purchase both items
     

    int moneySpent = getMoneySpent(keyboards_count, keyboards, drives_count, drives, b);

    fprintf(fptr, %dn, moneySpent);

    fclose(fptr);

    return 0;
}

char readline()
{
    size_t alloc_length = 1024;
    size_t data_length = 0;
    char data = malloc(alloc_length);

    while (true)
    {
        char cursor = data + data_length;
        char line = fgets(cursor, alloc_length - data_length, stdin);

        if (!line)
        {
            break;
        }

        data_length += strlen(cursor);

        if (data_length  alloc_length - 1  data[data_length - 1] == 'n')
        {
            break;
        }

        size_t new_length = alloc_length  1;
        data = realloc(data, new_length);

        if (!data)
        {
            break;
        }

        alloc_length = new_length;
    }

    if (data[data_length - 1] == 'n')
    {
        data[data_length - 1] = '0';
    }

    data = realloc(data, data_length);

    return data;
}

char split_string(char str)
{
    char splits = NULL;
    char token = strtok(str,  );

    int spaces = 0;

    while (token)
    {
        splits = realloc(splits, sizeof(char)  ++spaces);
        if (!splits)
        {
            return splits;
        }

        splits[spaces - 1] = token;

        token = strtok(NULL,  );
    }

    return splits;
}