Compilare: user.cpp: In function ‘void pre_dfs(int)’: user.cpp:48:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:118:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[stea].size(); ++i) ^ user.cpp: In function ‘int getInt()’: user.cpp:70:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, LBUFF, stdin); ^ user.cpp:80:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, LBUFF, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:89:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cercetatori.in", "r", stdin); ^ user.cpp:90:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cercetatori.out", "w", stdout); ^ user.cpp:126:91: warning: ‘stea’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%.6f %.6f\n", ceva[stea].x + poz[timp][nod].x, ceva[stea].y + poz[timp][nod].y); ^