Copying a string into a dynamical two-dimensional array

Copying a string into a dynamical two-dimensional array

By : user2949048
Date : November 16 2020, 06:23 AM
Hope that helps like the title already states I would like to copy various strings into a two-dimensional array. Each string has a different size therefore I need to use memory reallocation. The code below should do this job, but somehow I cannot get it working. , One problem is in the reallocation:
code :
str = realloc(str,str_num*sizeof(char));
str = realloc(str,str_num*sizeof(char*));
str[str_num-1] = realloc(str,strlen(str_new));
str[str_num - 1] = strdup(str_new);

Share : facebook icon twitter icon
passing a returned pointer of a dynamical two-dimensional array to a sub-function and addressing the array

passing a returned pointer of a dynamical two-dimensional array to a sub-function and addressing the array

By : Tushar
Date : March 29 2020, 07:55 AM
hope this fix your issue My issue is the following: I am making a pointer to a dynamic two dimensional array on the heap. This is done in a subfunction "Production" which fills in the elements of the table (array) and returns the pointer of the array to the main(). There I want to give the pointer as a parameter for another function "PrintTable"; which cout's the table. My issue is that the returned pointer is actually a one dimensional array (c++) and I don't know how to adress it to get the second row of the array.. Let me try to explain it to you: , This is your problem:
code :
int** productionTable=new int*[num1];
return* productionTable;
Copying a two dimensional array - still uses references?

Copying a two dimensional array - still uses references?

By : Emil Grønhøj Carlsen
Date : March 29 2020, 07:55 AM
help you fix your problem Java uses shallow copies. That is, you get a copy but it isn't what you want here. You want a deep copy. Try manually copying each element into returnList and see what happens.
Another way to solve this is to make your move, recurse, then unmake the move. Then you don't need to copy the array at all.
Creating N-dimensional dynamical array based on user's input?

Creating N-dimensional dynamical array based on user's input?

By : Attila Kalló
Date : March 29 2020, 07:55 AM
this one helps. An ASCII file has 61 columns, from which the columns are read using readlines(). The user has the option to specify how many columns to use to create an n-dimennsional array based on his/her choice of number of columns.
code :
>>> rows = 486
>>> columns = 5
>>> A = [[None] * columns for x in xrange(rows)]
>>> len(A)
>>> len(A[0])
Copying a Multi-Dimensional Array in C

Copying a Multi-Dimensional Array in C

By : C. cray
Date : March 29 2020, 07:55 AM
will be helpful for those in need Problem 1:
You have the wrong indexes when calling scanf. Use i,j, not x,y:
code :
    scanf("%lf" ,&source[i][j]);
void copy_arr(int x, int y, double source[x][y], double target[x][y]) {
    memcpy(target, source, x*y*sizeof(double));
Error while copying string to 2 dimensional character array

Error while copying string to 2 dimensional character array

By : user2601176
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Your code as you posted it in your question should compile correctly.
You probably want this:
code :
  khdev->m_Name[i][tmp.size() + 1] = '\0';    // don't forget the terminating 0 
  i++ ;
Related Posts Related Posts :
  • C: Unable to store lines from a file into an array
  • Should I be using GTK threads/Good tutorials on GTK threading?
  • Program works but outputs trailing garbage values
  • Letting 2 pointer pointing to same address
  • Different ways to print the two-dimensional array's contents
  • C Programming : Confusion between operator precedence
  • C code inside a loop not being executed
  • C - Weird symbols
  • C - Get pointer adress to string
  • how to start a function using a Struct?
  • Trying to tweak sscanf() to ignore \n and \t
  • How to find the inverse of a Rectangular Matrix in C using GSL
  • sizeof() showing different output
  • How to select/read/copy values after specific character in a string
  • Jump from bootloader generates exception
  • Array dropping values, picks up garbage
  • Swig: Syntax error in input(3)
  • multiple definition and making sure function is correctly written
  • MD4 openssl core dumped
  • Undefined-Behavior at its best, is it -boundary break? -bad pointer arithmetic? Or just -ignore of aliasing?
  • Why am i getting problem3.c:20:23: error: expected expression before ‘int’?
  • Right Justified Zero filled String in C
  • C Function with parameter without type indicator still works?
  • How to transmit data from an interrupt handler to an user application?
  • Why do I get the error "bash: ./a.out: Permission denied" when I execute a C program in Linux mint 15
  • syntax of sigchld and its declaration
  • error using g_idle_add() in C++, same thing works in C
  • why if else or nested if else are called single statement in C
  • How do I interpret this printf in C
  • load the functions of a shell script without executing it
  • Is FilterSendNetBufferLists handler a must for an NDIS filter to use NdisFSendNetBufferLists?
  • How to write to flash memory using inline assembly?
  • More Return Statements vs. More Indentation
  • How to show an image on a PictureBox from resource?
  • Having malloced some memory,I could't calculator the proper size of the memories I malloced.I don't know why
  • What is the main difference between integer pointer and character pointer?
  • Why are some functions declared extern and header file not included in source in Git source code?
  • what is the use of fflush(stdin) in c programming
  • Is it safe to return file File descriptor locally allocated from another function In C
  • Changing undefined values of an array
  • What does an empty parameter list mean?
  • using strtol on a string literal causing segmentation fault
  • Same structure objects memory overlap?
  • C-Linux-Any way to pass command "history" to Linux shell?
  • Using #define in defining string size C
  • How to use thread pool and message queues in Multithreaded Matrix Multiplication?
  • Can't find how to select path to run a C program
  • Automatic variable in C not initialized but given fixed value within loop
  • main() function defined without return type gives warning
  • Output of following code with integer, float, char variable
  • why buffer memory allocation error in opencl
  • Why am I getting this error during run-time?
  • Strange behaviour of the pow function
  • task in increment , decrement , printf() , why these are evaluated in this manner in C
  • 28 extra bytes in bss
  • Waiting for multiple events without polling
  • Why are my variables reporting as "undeclared identifier" when compiling?
  • Correct AddNode function but somehing happens when I printf
  • When I traverse in the splay tree, then now which one is root?
  • Data type conversion in Postfix evaluation
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org