Compilare: user.cpp: In function ‘double __getStriveDist(Point*, Point, size_t, double)’: user.cpp:44:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < size; ++i) ^ user.cpp:46:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < size ^ user.cpp: In function ‘double __getSmallestDist(Point*, size_t)’: user.cpp:80:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < size; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:107:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in", "r", stdin); ^ user.cpp:108:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.out", "w", stdout); ^ user.cpp:111:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:116:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^