Compilare: user.cpp: In function ‘int main()’: user.cpp:12:19: warning: unused variable ‘g’ [-Wunused-variable] int n,z,i,cnt,g=1,r,aux; ^ user.cpp:12:23: warning: unused variable ‘r’ [-Wunused-variable] int n,z,i,cnt,g=1,r,aux; ^ user.cpp:12:25: warning: variable ‘aux’ set but not used [-Wunused-but-set-variable] int n,z,i,cnt,g=1,r,aux; ^ user.cpp:10:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("wall.in","r",stdin); ^ user.cpp:11:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("wall.out","w",stdout); ^ user.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&z); ^ user.cpp:17:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t[i]); ^