Compilare: user.cpp: In function ‘int main()’: user.cpp:19:11: warning: unused variable ‘m’ [-Wunused-variable] int n,m,type,x,i,ans,j,poz1,poz2; ^ user.cpp:19:13: warning: unused variable ‘type’ [-Wunused-variable] int n,m,type,x,i,ans,j,poz1,poz2; ^ user.cpp:19:18: warning: unused variable ‘x’ [-Wunused-variable] int n,m,type,x,i,ans,j,poz1,poz2; ^ user.cpp:20:9: warning: unused variable ‘poz’ [-Wunused-variable] int poz; ^ user.cpp:21:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.in", "r", stdin);// !!! nrtri !!! ^ user.cpp:22:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.out", "w", stdout); ^ user.cpp:23:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:25:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^