initialize a multidimensional C array of variable size to zero

Question

I want to initialize a two-dimensional array of variable size to zero. I know it can be done for a fixed-sized array:

int myarray[10][10] = {0};

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Answer 1

You can't create a static array using non-constant variables. Try using dynamic allocation:

int i = 10;
int j = 10;
size_t nbytes = i*j*sizeof(int);
int* myarray = (int*) malloc(nbytes);
memset(myarray,0,nbytes);