structure in c example

I tried to write program after some reading about structure but I am stuck. how to make proficient program for structure

Code:

---

#include<stdio.h>

int maain (void)
 {
    // Does we declear structure like this ? //
   
    struct account
    {
      int profile_number;
      int mobile_number;
      char first_letter_name;
      char last_letter_name;     
    };
 
    // How to inilizelize structure ? //
   
    struct account profile ;

      profile.profile_number = 123;
      profile.mobile_number = 456123;
      profile.first_letter_name = 'A';
      profile.last_letter_name = 's';
     
      printf (" \n Print profile number %d ", profile.profile_number);
      printf (" \n Print mobile_number %d ", profile.mobile_number);
      printf (" \n Print first letter of name %c ",profile.first_letter_name);
      printf (" \n Print profile number %c ",profile.last_letter_name);
   
    return 0;
 }

---

What's wrong in program ?

It actually looks pretty good, but you have no main function :)
maaaaaain typo.

Quote:

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Originally Posted by jack jordan

It actually looks pretty good, but you have no main function :)
maaaaaain typo.

---

your are correct. I have done silly mistake

I have included typedef what's wrong in this program. I want to know the use of typedef

Code:

---

#include<stdio.h>

int main (void)
 {

   
    typedef struct account
    {
      int profile_number;
      int mobile_number;
      char first_letter_name;
      char last_letter_name;     
    };
 

   
    struct account profile ;

      profile.profile_number = 123;
      profile.mobile_number = 456123;
      profile.first_letter_name = 'A';
      profile.last_letter_name = 's';
     
      printf (" \n Print profile nmber %d ", profile.profile_number);
      printf (" \n Print mobile_number %d ", profile.mobile_number);
      printf (" \n Print first letter of name %c ",profile.first_letter_name);
      printf (" \n Print profile nmber %c ",profile.last_letter_name);
   
    return 0;
 }

---

I refactored your code, here is the result:

Code:

---

#include <stdio.h>
#include <stdlib.h>

struct account
    {
        int profile_number;
        int mobile_number;
        char first_letter_name;
        char last_letter_name;     
    };

int main (void)
 {
    struct account profile=
    {
        .profile_number = 123,
        .mobile_number = 456123,
        .first_letter_name = 'A',
        .last_letter_name = 's'
       
    };
   
    printf (" \n Print profile nmber %d ", profile.profile_number);
    printf (" \n Print mobile_number %d ", profile.mobile_number);
    printf (" \n Print first letter of name %c ",profile.first_letter_name);
    printf (" \n Print profile nmber %c ",profile.last_letter_name);
   
    return EXIT_SUCCESS;
 }

---

Definitions of struct and typedef should go in global scope.
You miss the name of your typedef.

Code:

---

// declare a struct and typedef in two steps
struct account_s
{
    int profile_number;
    int mobile_number;
    char first_letter_name;
    char last_letter_name;
};

typedef struct account_s account;

// declare a named struct and typedef in one step
typedef struct account_s // <-- name of struct
{
    int profile_number;
    int mobile_number;
    char first_letter_name;
    char last_letter_name;
} account; // <-- name of type

---

In the second case, you can omit the name of struct. Then you can use only the typedef.

Thanks @WoodSTokk , @ordak

what is difference between structure and typedef. How to decide what to use structure or typedef ?

Code:

---

#include<stdio.h>
 
int main (void)
 {
 
    typedef struct account_s
    {
      int profile_number;
      int mobile_number;
      char first_letter_name;
      char last_letter_name;
    } account;
 
 
   
    struct account_s profile ;
 
      profile.profile_number = 123;
      profile.mobile_number = 456123;
      profile.first_letter_name = 'A';
      profile.last_letter_name = 's';
       
      printf (" \n Print profile nmber %d ", profile.profile_number);
      printf (" \n Print mobile_number %d ", profile.mobile_number);
      printf (" \n Print first letter of name %c ",profile.first_letter_name);
      printf (" \n Print profile nmber %c ",profile.last_letter_name);
   
    return 0;
 }

---

Result

Print profile nmber 123
Print mobile_number 456123
Print first letter of name A
Print profile nmber s

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