Memory usage isn't decreasing when using free?

c, free, memory-leaks

Solution

Typical C implementations do not return free:d memory to the operating system. It is available for use by the same program, but not to others.

Problem

Somehow this call to `free()` is not working. I ran this application on Windows and followed the memory using in Task Manager, but saw no reduction in memory usage after the call to `free()`. ``` int main(int argc, char *argv[]) { int i=0; int *ptr; ptr = (int*) malloc(sizeof(int) * 1000); for (i=0; i < 1000; i++) { ptr[i] = 0; } free(ptr); // After this call, the program memory usage doesn't decrease system("PAUSE"); return 0; } ```

Original source