How can I split a string into a struct? - c

Question

I want to get a list of all substring separated by "," and put each into a struct.
e.g if i receive "connor,michel" i want to put "connor" in struct[0].name and "michel" in struct[1].name. for now I have this:
struct crit
{
char* titre;
char* noms;
int annees;
float cote;
};
char * les_noms = (char*) malloc(sizeof(char*));
int i = 0;
char *item = strtok(noms, ",");
while(item != NULL)
{
les_noms[i++] = item;
printf("un nom = %s\n", item);
item = strtok(NULL, ",");
}
sorry for the french words.
edit: maked up my mind about les_nom

Answer 1

What about this?
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct person
{
char *name;
};
int main()
{
struct person *persons = NULL;
int num_persons = 0;
char names[80] = "joana,cleiton,márcio,elana,joão";
const char sep[2] = ",";
char *item = strtok(names, sep);
while (item != NULL)
{
persons = realloc(persons, ++num_persons * sizeof(struct person));
persons[num_persons - 1].name = malloc(strlen(item)) + 1;
strcpy(persons[num_persons - 1].name, item);
item = strtok(NULL, ",");
}
for (unsigned int i = 0; i < num_persons; i++)
{
printf("%d: %s\n", i, persons[i].name);
}
for (unsigned int i = 0; i < num_persons; i++)
{
free(persons[i].name);
}
free(persons);
}
Or the fixed size solution:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct person
{
char *name;
};
int main()
{
char names[80] = "joana,cleiton,márcio,elana,joão";
const char sep[2] = ",";
unsigned int num_persons = 1;
for (unsigned int i = 0; i < strlen(names); i++)
{
if (names[i] == ',')
{
num_persons++;
}
}
struct person persons[num_persons];
char *item = strtok(names, sep);
for (unsigned int i = 0; item != NULL; i++)
{
persons[i].name = malloc(strlen(item) + 1);
strcpy(persons[i].name, item);
item = strtok(NULL, ",");
}
for (unsigned int i = 0; i < num_persons; i++)
{
printf("%d: %s\n", i, persons[i].name);
}
for (unsigned int i = 0; i < num_persons; i++)
{
free(persons[i].name);
}
}
You probally will need more items in the struct, it is easy, look:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct person
{
char *name;
int len_name;
int id;
};
int main()
{
char names[80] = "joana,cleiton,márcio,elana,joão";
const char sep[2] = ",";
unsigned int num_persons = 1;
for (unsigned int i = 0; i < strlen(names); i++)
{
if (names[i] == ',')
{
num_persons++;
}
}
struct person persons[num_persons];
char *item = strtok(names, sep);
for (unsigned int i = 0; item != NULL; i++)
{
persons[i].name = malloc(strlen(item) + 1);
persons[i].len_name = strlen(item);
persons[i].id = i;
strcpy(persons[i].name, item);
item = strtok(NULL, ",");
}
for (unsigned int i = 0; i < num_persons; i++)
{
printf("%d: %s | %d\n", persons[i].id, persons[i].name, persons[i].len_name);
}
for (unsigned int i = 0; i < num_persons; i++)
{
free(persons[i].name);
}
}