Slide 1

Solution: dynamic arrays

•File has the following layout:

• DWORD: number of elements

DWORD[]: an array of integers

•

•File: 2, 0, 1

•File: 10, 0, 1, 0, 1 , 0, 2, 2, 2, 2, 2

File: 0

// C/C++

int *data;

int numElements;

•

•void ReadData()

{

• free(data); // NULL can be passed

ReadFile(…, &numElements, sizeof(numElements), …);

data = (int *)malloc(numElements); // you can pass 0 here, needs a cast in C++

• if (data)

• {

• ReadFile(…, data, numElements*sizeof(data[0]), …);

• }

}