在另一个结构中初始化结构数组

Question

I'm completely stumped. How do I fill a struct array that is contained inside another struct ?

I have the two struct s:

struct employee_stats{
    char emp_name[MAX_NAME_LENGTH];
    double salary;
    int years_employed;
}

struct annual_reviews{
    int year;
    struct employee_stats employee[NO_EMPLOYEES];
}

I declare a pointer to an array of annual_reviews structs

annual_reviews *sort_records = new annual_reviews[num_years];

I have a vector of strings that read from a text file earlier in the program. I send the employee_record and year vectors to a method to fill the two struct s

void DataSort::load_records(vector<string> employee_record, vector<string> year){
    vector<string> line_data;
    string word;

    //split employee_record by \t and into single line string vector
    for(int i = 0; i < employee_record.size(); i++){
         stringstream wordstream(employee_records[i]);
         while(getline(wordstream, word, '\t')){
             if(!word.empty())
                 line.push_back(word);
         }
    }

Now , within the same method, I want to add this data to my struct s:

    for(int j = 0; j < num_years; j++){
        sort_records[i].year = atoi(year[i].c_str); //year of record
        for(int k = 0; k < NO_EMPLOYEES; k++){
            //here is where it all falls apart
            sort_records[j].employee_stats[j].emp_name = line[j]; //fill the records
        }
    }
}

I realize I'm not accessing the inside struct correctly but I'm stuck, I've hit a wall.

I get two compilation errors using VS2015:

std::basic_string<char,std::char_traits<char>,std::allocator<char>>::c_str':non-standard syntax;use'&'to create a pointer to member

array type 'char[25]' is not assignable

Can someone point me in the right direction? Do I need to create a pointer to the member struct ? I thought you could index the members directly.

Thanks.

Answer 1

struct used for making datatype.

struct employee_stats{
    char emp_name[MAX_NAME_LENGTH];
    double salary;
    int years_employed;
}

struct annual_reviews{
    int year;
    struct employee_stats[NO_EMPLOYEES];
}

on the annual_reviews datatype, i think you declare another datatype by using

struct employee_stats

so i think you should declare it as a data array as you want it on the second one

struct employee_stats{
    char emp_name[MAX_NAME_LENGTH];
    double salary;
    int years_employed;
}

struct annual_reviews{
    int year;
    employee_stats employeeData[NO_EMPLOYEEs];
}

Here after making variable type annual_reviews, i think you can access the employeeData array. And then for the char error, i think you should use string as dataType on emp_name.

[EDIT] copy string to char

strcpy(sort_records[j].employee_stats[j].emp_name, line[j].c_str());

Reading source : http://www.cplusplus.com/reference/string/string/c_str/

Answer 2

You problem is that you are not declaring the inner structure correctly.

You code should look like some thing like this (pseudo-code):

typedef employee_stats some_type;
Use some_type inside annual_reviews.

The rest is trivial.