因错误而退出程序时,我应该释放所有的mallocated内存吗？
something = (char**) malloc (x * sizeof(char*));
for (i = 0; i < x; i++)
something[i] = (char*) malloc (y + 1);
...
if (anything == NULL) {
printf("Your input is wrong!");
// should I free memory of every mallocated entity now?
exit(1);
}
else {
// work with mallocated entities
...
free(something); // it must be here
system("pause);
}