Allocating integer arrays

[modern citrus]

Hi guys! This is my 2nd exercise regarding this topic. Myself and most of my classmates are completely lost. I've tried to do the function part first, does it look correct or could I get any tips on what's wrong?

All kinds of tips are extremely appreciated. I'm reading my C book like a lunatic to find something that will help me.

So the code I've been writing this far is:

#include <stdio.h>
#include <stdlib.h>

int** expand(int n, int* v); //prototype

int main() 
{
    int n;
    int **Matrix;

    while(scanf("%d", &n)==1)
    {

    }

}

int** expand(int n, int* v)
{
    int **Matrix = malloc(sizeof(int*) * *v);
    if (Matrix)
        memcpy(Matrix, n, sizeof(int*) * *v);
    return Matrix;

}

[whole trellis]

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[placid fiber]

For expand, I would do something like

int **expand(int n, int *v)
{
     int  i;
     int  j;
     int  **matrix;

     i = 0;
     j = 0;
     matrix = malloc(sizeof(int *) * n);
     while (i < n)
     {
          matrix[i] = malloc(sizeof(int) * n);
          j = 0;
          while (j < n)
          {
               matrix[i][j] = v[i];
               j++;
          }
          i++
     }
     return (matrix);
}

To print the matrix, its more or less the same thing. If you are working with a matrix, always use a nested loop

[modern citrus]

Thanks for the tip! 🙂

[placid fiber]

np ^^

[whole trellis]

@modern citrus Has your question been resolved? If so, run !solved :)

[modern citrus]

!solved