logo
Tags down

shadow

Simple question about declaring an empty string in C


By : Sara Campbell
Date : September 15 2020, 09:00 AM
wish help you to fix your issue
I did not get any compiler warning when I was declaring a string in the following ways
code :


Share : facebook icon twitter icon

simple question: Difficulty in declaring and using variable


By : user2068743
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The basic problem is lines like this
code :
<%
if (Model.ReferenceFields != null)
{
    int count = 1; 
    foreach (var referenceName in Model.ReferenceFields)
    {
        var value = "value";
        count++;
        value = value + count.ToString(); 
        %>
        <tr>
        <td><input type="hidden" name="Tests.Index" value='<%= value %>' /></td>
        <td><input type="text" name="Tests['<%= value %>'].Value"/></td>
        <td><input type="button" value= "Add" /></td></tr>
        <%
    }
}
%>

Simple question: Why does the string library function std::string::find always return std::string::npos?


By : user3199391
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , cin >> choice stops reading before the first whitespace. You want getline(std::cin, choice) here.

declaring empty string variable in c


By : pranith kumar
Date : March 29 2020, 07:55 AM
this will help Arrays in C must have their size known when they are created, and the size cannot be changed after that.
So you must specify a size for all of your arrays.
code :
char first[100] = { 0 };    // avoid garbage in case input fails
scanf("%99s", first);

Question with creating/declaring data types(int,string,streamreader)


By : ROC
Date : March 29 2020, 07:55 AM
With these it helps In the case of the string, string a = ""; is not the same as string b = new string();.
Why:

Postgres group by empty string question to include empty string in output


By : user3079173
Date : March 29 2020, 07:55 AM
Hope this helps You need a CTE which returns all possible combinations of phone and group and a left join to the table so you can group by phone:
code :
with cte as (
  select * 
  from (
    select distinct phone from mytable   
  ) m cross join (
    select distinct "group" from mytable  
  ) g 
)  
select c.phone, string_agg(coalesce(t.spec, ''''''), ',') spec
from cte c left join mytable t
on t.phone = c.phone and t."group" = c."group"
group by c.phone
| phone | spec           |
| ----- | -------------- |
| 1     | Lock,Full,Face |
| 2     | Lock,'',Face   |
| 3     | '',Scan,''     |
Related Posts Related Posts :
  • Importance of '0' character and << operator in this program
  • How to debug a quadratic probing implementation for hash tables in C without using pointers?
  • Pointer to Pointer in c, getting unexpected value
  • "Permission denied" in open() function in C
  • How to assign an array of structs
  • Sort an Array of struct by a value of a field inside the struct
  • Implement stack with pointers in c
  • C program that goes through a string and flags for non-letters
  • C while statement in switch clause
  • Can we allocate memory for char * but return it as const char *?
  • How do Comma-separated expressions as condition in a for-loop work?
  • Sort Structs by the value of an attribute in it
  • How should I make users to put in the info that I want?
  • Are bitmask checks more efficient than comparing numbers?
  • Are the fast integer types faster when stored in the CPU registers?
  • Does realloc deallocate before trying to allocate new memory?
  • Failing to compile a 15+ year old MUD codebase written in C
  • opendir dont get content of buffer char * on C language?
  • Can we have '+' operator inside printf()?
  • Why scanf function do not accept escape sequences as an input?
  • Print strings of length of k from a and b
  • C problem with passing pointer to struct to function
  • Shall I use register class variables in modern C programs?
  • Can I specify conditions for the rand() function?
  • C fprintf and fscanf saving game state
  • Fast formula to get the range a number is in, given a perfect binary subdivision?
  • Why can't I use more than two registers in inline asm?
  • A question of strstr() and fgets() in a demo from the book《Head First C》
  • the problem is from a algorithm problem I do recently,but I can't gain the right answer
  • Problem to access members in pointer struct located in another pointer struct
  • Check that all symbols defined in static library
  • Function will only properly work if I've printed the values of the attributes
  • Why my code is showing time limit exceeded
  • #define statement for address of memory
  • How to call a function from another .c file
  • Memory layout of C struct
  • Why should we use return statement when using a recursive call?
  • error: expected identifier or '(' before '=' token
  • Why is it not possible to exchange the position of array name and index in swift like C (a[i] == i[a])?
  • How can I allocate enough memory to store an entire text file in C?
  • Segmentation fault when I use afl fuzzer
  • What happens in the assembly output when we add "cc" to clobber list
  • What is the equivalent of Keil _at_ in gcc
  • Heap-Overflow or Buffer-Overflow?
  • C: Why is &= better that =?
  • Create exactly 5 process with fork()
  • gcc compile function in ifdef
  • where is the memory leak in the code below?
  • Most efficient formula for unpacking 16-bit BCD? (e.g. 0x1234 to 0x01020304)
  • how to find which integer no is maximim out of given numbers
  • Difference between a VOID function with a string argument VS a function with a string argument that returns a char array
  • why the output of the following program different (random value) every time?
  • Why does this macro expression in C behave unexpectedly?
  • When is memory allocated and de-allocated static and dynamic memory in C?
  • In C, what happens if we left shift the bits out of range and again right shift the values in the same operation
  • why the following c program is giving segmentation error?
  • How can I run through all the characters of a string and check if they're all numbers in C?
  • adc frequency vs accuracy
  • why the output of following c program is 16 16 16?
  • Is it possible to declare a function in header file with unknown type that is specified only in file '.c'?
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk