Compilare: user.cpp: In function ‘graph* readGraph()’: user.cpp:31:9: warning: unused variable ‘j’ [-Wunused-variable] int i, j, dist; ^ user.cpp:31:12: warning: unused variable ‘dist’ [-Wunused-variable] int i, j, dist; ^ user.cpp: In function ‘int main()’: user.cpp:85:7: warning: unused variable ‘drum’ [-Wunused-variable] int *drum, *drum_aux; ^ user.cpp:85:14: warning: variable ‘drum_aux’ set but not used [-Wunused-but-set-variable] int *drum, *drum_aux; ^ user.cpp:86:6: warning: variable ‘min’ set but not used [-Wunused-but-set-variable] int min, cost; ^ user.cpp: In function ‘graph* readGraph()’: user.cpp:34:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &nr_varfuri, &nr_muchii); ^ user.cpp:39:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &cost); ^ user.cpp: In function ‘int main()’: user.cpp:81:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("autobuz.in", "r", stdin); ^ user.cpp:82:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("autobuz.out", "w", stdout); ^