Compilare: user.cpp: In function ‘int lee_initia(int, int)’: user.cpp:21:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int lee(int, int, int, int, int, int, int)’: user.cpp:26:30: warning: unused variable ‘j’ [-Wunused-variable] int x_aa, y_aa, s, k, i, j; ^ user.cpp: In function ‘int dragoni(int, int, int)’: user.cpp:63:21: warning: unused variable ‘ma’ [-Wunused-variable] int x_aa, y_aa, ma, s, i, k, j; ^ user.cpp:89:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:97:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.in","r",stdin); ^ user.cpp:98:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out","w",stdout); ^ user.cpp:105:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:112:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%*c"); ^ user.cpp:114:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&xasd); ^ user.cpp:165:48: warning: ‘y_s’ may be used uninitialized in this function [-Wmaybe-uninitialized] if( lee( n, m, x_i, y_i, x_s, y_s, mid ) ){ ^ user.cpp:165:48: warning: ‘y_i’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:165:48: warning: ‘x_s’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:165:48: warning: ‘x_i’ may be used uninitialized in this function [-Wmaybe-uninitialized]