problem in structs

[St0rM-MaN]

#include<stdio.h>

#include<string.h>

struct list

{

       char first[20];

       char name[20];

       char blahblah[40];

       };

    void get_struct(struct list * x);
       main()

       {

       struct list data[4];

       struct list *ptr;

       ptr=data;

       get_struct(ptr);

       }
     void  get_struct(struct list *x)

       {


       int i;


       for(i=0;i<4;i++)

       {
    

   ((x+i)->first)="storm";  
      

       printf("\nfisrt=%s",(x+i)->first);

       printf("\nname=%s",(x+i)->name);

       printf("\nlif is =%s",(x+i)->blahblah);

       strcat((x+i)->first,(x+i)->name);

       printf("\nme =%s",(x+i)->first);



       }


       printf("Good Night");
     
  }

compiler give me this in line

((x+i)->first)="storm";

22 C:\Documents and Settings\St0rM\Desktop\test.c incompatible types in assignment
why so ?

[zacs7]

can't do that, use strcpy()

[vart]

also
1. int main should be used
2. fix indentation
3. pass array size together with array pointer - don't use "magic numbers" like 4 in the get_struct function
4. x[i].first is a lot easier to read than ((x+i)->first)

[St0rM-MaN]

works prefect

#include<stdio.h>

#include<string.h>

struct list

{

       char first[20];


       char name[20];

       char blahblah[40];



       };



    void get_struct(struct list * x);

       main()

       {

       struct list data[4];

       struct list *ptr;

       ptr=data;

       get_struct(ptr);

       }

     void  get_struct(struct list *x)

       {

       int i;

       for(i=0;i<4;i++)

       {

    

       strcpy((x+i)->first,"storm");  

       strcpy((x+i)->name," man");  

       strcpy((x+i)->blahblah,"Is nothing But A good Lie");  

       printf("\nfisrt=&#37;s",(x+i)->first);

       printf("\nname=%s",(x+i)->name);

       printf("\nlif is %s",(x+i)->blahblah);

       strcat((x+i)->first,(x+i)->name);

       printf("\nme =%s\n",(x+i)->first);

       }

       printf("Good Night");

       }

but why i can't do

((x+i)->first)="storm";

?
isn't x+i-> access the first array ?
thanks again

[vart]

you can access the array with (x+i)-> operator (although I think x[i]. looks nices)

but you cannot assigh to array in C...

To put contents in the char-array - you should use string-manipulation functions like strcpy

[St0rM-MaN]

1. int main should be used
2. fix indentation
3. pass array size together with array pointer - don't use "magic numbers" like 4 in the get_struct function
4. x[i].first is a lot easier to read than ((x+i)->first)
ahhaaaaaaa
thanks for this notices 4. x[i].first is a lot easier to read than ((x+i)->first)
specially this 4. x[i].first is a lot easier to read than ((x+i)->first)
but you cannot assigh to array in C...
so i can only access it's content's but i can't assign any thing for it except with string manipulations functions
thanks for the tips

[Adak]

When a char array is first declared, you can THEN add a string of char's:

char_array[] = "It's a pirate's life for me"

After the initial declaration of the char array, you can alter it char by char:

char_array[i] = 'P'

if you like.

You can use all kinds of equivalent pointer notation with arrays, but they quickly become a PITA to debug, etc. imo