how to pass array struct to function? [duplicate] - c

Question

This question already has answers here:
How do I return an array of struct from a function?
(3 answers)
Closed 5 years ago.
i'm trying to pass an array of stract to a function, but i just gave up. i´m trying to store data inside the structure function "fun()", so i can later pull up the data in function lo(); when ever i need too.
#include<stdio.h>
#include<string.h>
struct Operador
{
char nome[32];
char telefone[15];
char idade[3];
};
struct Operador* fun( ) {// im using this function to store the data
struct Operador* pItems = malloc(3 * sizeof(struct Operador));//is it necessary to use malloc
int n;
printf(" give nome: ");
scanf("%s", pItems->nome);
printf(" give telefone: ");
scanf("%s", pItems->telefone);
printf(" give age: ");
scanf("%s", pItems->idade);
return pItems;
}
//*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-*--*-*-*-*-*-*-*-*-
void lo(struct Operador pItems)//and this function to display the data
{
struct Operador Items = pItems;
int j;
printf("\n\n");
printf("Name is: %s \n", Items->nome);
printf("telefone is: %s \n", Items->telefone);
printf("age is: %s \n", Items->idade);
printf("\n\n");
return pItems;
}
main()
{
fun(); //here i call out the function for the user to type in information
printf("\n\n click any key to see data");
system("pause");
lo(); // and this function is supposed to display information
}

Answer 1

You probably want this:
#include<stdio.h>
#include<string.h>
struct Operador
{
char nome[32];
char telefone[15];
char idade[3];
};
struct Operador *fun()
{
struct Operador* pItems = malloc(sizeof(struct Operador)); // allocate space for ONE structure
printf(" give nome: ");
scanf("%s", pItems->nome);
printf(" give telefone: ");
scanf("%s", pItems->telefone);
printf(" give age: ");
scanf("%s", pItems->idade);
return pItems;
}
void lo(struct Operador *pItems)
{
printf("\n\n");
printf("Name is: %s \n", pItems->nome);
printf("telefone is: %s \n", pItems->telefone);
printf("age is: %s \n", pItems->idade);
printf("\n\n");
}
int main()
{
struct Operador *op = fun(); // op points to new structure filled in by user
lo(op); // display structure
free(op); // free structure
system("pause");
}
This code is still bad (no error checking, usage of %s format specifier without length limitation, poor choice of names, age field as a string instead of an int and probably a few more), but it works as expected.