Assigning a character array to a character array in a structure

Question

I am working on a project that requires that I make an array of a certain structure type. The structure looks like this:

typedef struct
{
char array[30];
int num;
}structure

I have declared an array of these structures like this:

structure struct1[5];

I passed this structure array to a function which fills the first four elements with a string and a number. The fifth is left blank. Later in the program, I pass the array again and try to set the string in the structure to a user determined string using gets(). I am getting this error:

438:19: error: incompatible types when assigning to type 'char[30]' from type 'char *'

If I need to provide more clarification, please tell me.

Thanks!

EDIT: Here is what I am doing:

typedef struct
{
char array[30];
int num;
}structure;

void fillStructs(structure[]);
void userEditStructs(structure[]);

main()
{
structure myStructs[5];
fillStructs(myStructs);
userEditStructs(myStructs);
return 0;
}

void fillStructs(structure s[])
{
    //code to fill myStructs elements 0-3.
}

void userEditStructs(structure s[])
{
char newArr[30];
int newNum;
printf("Please enter your string:\n\nEntry:\t");
gets(newArr);
printf("Please enter your number:\n\nEntry:\t");
scanf("%i", newNum);
s[5].array = newArr;
s[5].num = newNum;
}

Please add the code where you're passing the array of structures to the function. — Fiddling Bits
– Fiddling Bits, Commented Nov 20, 2013 at 17:23
Never ever use gets(). It is dangerous, it is deprecated, it is removed from C++ and should be removed from C too. — n. m. could be an AI
– n. m. could be an AI, Commented Nov 20, 2013 at 17:33

Florian Groetzner · Accepted Answer · 2013-11-20 17:27:54Z

3

you are doing something like this

char a[20];
a = "bla";

you cant do this.

do strcpy(a,"bla"); instead. ( #include <string.h> )

answered Nov 20, 2013 at 17:27

Florian Groetzner

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Comments

John Källén · Accepted Answer · 2013-11-20 17:28:51Z

0

Without looking at the code you are probably trying to do something like:

struct[4].array = gets(<unknown>);

which won't work, as you can't assign the returned char* from gets to an array as the compiler says. You are also using gets, which is strongly discouraged as it performs no bounds checking. Instead, do the following:

fgets(struct[4].array, sizeof(struct[4].array), stdin);

which will do proper bounds checking.

answered Nov 20, 2013 at 17:28

John Källén

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