Dynamic Memory Allocation of Arrays in C

In c one can allocate memory for multi-dimensional arrays using malloc. Here is a sample code which one can use for initiating 2d arrays. This is useful in dynamic memory allocation for matrices #include "stdio.h"; #include "alloc.h"; /* Here we get the array's dimensions after getting the values of rows and columns from a file or from the command line using scanf*/ void main() { int **matrix; int rows; int columns; matrix = malloc(rows*sizeof( *matrix)); if (matrix != NULL) { for(int i=0 ; i < rows ; i++) { matrix[i] = (int *)malloc(columns*sizeof( **matrix)); } } else { printf("Unable to allocate memory for the array\n"); } } You can access the above arrays same as you access a 2 dimensional array.