Win32 API - Code Sample to Know Drive Names

This code sample shows each drive letter in a message-box and also stores them in the “drives” array.
Number of drives found is stored in “drive_count” variable.

/******* Get all drives available *******/

char buffer[1024];
char *drives[10];
int drive_count = 0;
GetLogicalDriveStringsA(512, buffer);
for (int i = 0; i < 10; i++) { drives[i] = (char *) malloc(4); }  // Allocate mem for 20 elements
char *ptr = buffer;
while (*ptr) {
  MessageBoxA(NULL, ptr, "Drive", MB_OK);  // Display each drive in a messagebox
  strcpy(drives[drive_count], ptr);
  drive_count++;
  ptr = &ptr[strlen(ptr)+1];
}

for (int i = 0; i < 10; i++) { free(drives[i]); }  // Free mem for drives