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Char with a variable length


Char with a variable length

By : Ed Bauman
Date : November 22 2020, 10:31 AM
I hope this helps . Is it possible to define a char with a variable length?
code :
struct person{
   int c; 
   char name[]; /* Variable length array */
};
char *name;


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Declare a PHP variable with length as we do in database char(10)

Declare a PHP variable with length as we do in database char(10)


By : Twiske
Date : March 29 2020, 07:55 AM
help you fix your problem Maybe it's your database that is the problem.
The CHAR datatype will always fill up the remaining unused characters when storing data. If you have CHAR(3) and pass 'hi', it will store it as 'hi '. This is true for a lot of relational database engines (MySQL, Postgres, SQLite, etc.).
VC++ read variable length char*

VC++ read variable length char*


By : Lifan Chen
Date : March 29 2020, 07:55 AM
it helps some times I'm trying to read a variable length char* from the user input. I want to be able to specify the length of the string to read when the function is called; , You have to specify the size of value to scanf_s:
code :
int control = scanf_s("%s", value, size);
How to convert a string variable to a char variable with a strict length?

How to convert a string variable to a char variable with a strict length?


By : Q Leo Sung
Date : March 29 2020, 07:55 AM
will help you I want to convert a string variable into char that char variable will have a length 30 symbols always. I code in C#.
code :
var result = new string('a',30).ToCharArray();
How to resolve a variable for char length?

How to resolve a variable for char length?


By : ankgeekcode
Date : March 29 2020, 07:55 AM
Does that help EDIT , You want a variable lenght array, you can do it like this:
code :
int digit;
scanf("%d", &digit);
char test [digit+1];
int digit;
scanf("%d", &digit);
char* aa = malloc(digit + 1);
//Do what you want with the char array aa
free(aa);
char real_array[5];
sizeof(real_array); // == 5

char* dynamic_array = malloc(5);
sizeof(dynamic_array) // == sizeof(char*) == on most systems = 8
T-SQL UDF scalar function to return char of variable length

T-SQL UDF scalar function to return char of variable length


By : Palak Rathi
Date : March 29 2020, 07:55 AM
I wish this helpful for you I am not sure if you can do this with a user function as in my estimation you are going to need to do dynamic SQL to get what you want which is to define a return type during the operation. You can do this in a procedure but not in a function as far as I know.
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