Compilare: user.cpp: In function ‘bool lee(int, int, int, int, int, int, int)’: user.cpp:27:30: warning: unused variable ‘j’ [-Wunused-variable] int x_aa, y_aa, s, k, i, j; ^ user.cpp: In function ‘void dragoni(int, int, int)’: user.cpp:65:30: warning: variable ‘j’ set but not used [-Wunused-but-set-variable] int x_aa, y_aa, s, i, k, j; ^ user.cpp: In function ‘int main()’: user.cpp:94:35: 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:95:37: 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:102:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:105:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%*c"); ^ user.cpp:107:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&xasd); ^ user.cpp:159:9: 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:159:9: warning: ‘y_i’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:159:9: warning: ‘x_s’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:159:9: warning: ‘x_i’ may be used uninitialized in this function [-Wmaybe-uninitialized]