group struct info

Hello All,

I have some data into an struct and I would like to group those information. My struct looks like this:

Code:

---

struct MyStruct data[MAX];

struct MyStruct {
        char date[20];
        char code[5];
};

void PrintStruct() {
        int x;
        for(x=0; x<MAX; x++) {
                printf("\t\t** data[%d].date: [%s] **\n",x,data[x].date);
                printf("\t\t** data[%d].cc_code: [%s] **\n",x,data[x].code);
        }
}

---

I would like to count how many records of an certain code I have and group them. For example:

[1]=10
[-1]=99
[8]=12

And so on. Any help ?

Another thing that I'm trying to do is count how many records my stryct has. I've define MAX to 100000 but I don't want to loop all the 10000 records if I only have 20 records on that moment, for example.

Any help ?

Thanks a lot,

Keep a count of the total number of elements used, that way you don't need to loop through MAX entries.

Counting and grouping is going to be a looping and shuffling exercise, I'm afraid. Unless you want to change data structure, and use a list of some sort.

Could any one give me an example, even if a simple one.

Thanks,

Just do something like this:

Code:

---

#define MAX 1000000

while(there_are_more_structs) {
    read_in_a_struct();
    struct_count ++;
}

for(...; count < struct_count; ...) {
    /* classify the struct */
}

---