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2d array as parameter in c

Code examples

1
0

dynamic 2d arr in c 

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

int main(void){
    int i, j, col = 3, row = 4;

	/* create dynamic 2d arr (matrix) */
  
    int **m = (int**)malloc(col * sizeof(int)); 
    for(int i = 0; i < col ; i++){
        m[i] = (int*)malloc(row * sizeof(int));
    }
  	
  	/* after usage free it */
  
    for (int i = 0; i < row; i++){
        free(m[i]);
    }
    free(m);
}
0
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c pass two dimensional array to function 

#include <stdio.h>
const int M = 3;
const int N = 3;
 
void print(int arr[M][N])
{
    int i, j;
    for (i = 0; i < M; i++)
      for (j = 0; j < N; j++)
        printf("%d ", arr[i][j]);
}
 
int main()
{
    int arr[][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    print(arr);
    return 0;
}

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