Compilare: user.cpp: In function ‘int main()’: user.cpp:8:10: warning: unused variable ‘st’ [-Wunused-variable] int n,s,st,dr,mij,q,rasp; ^ user.cpp:8:13: warning: unused variable ‘dr’ [-Wunused-variable] int n,s,st,dr,mij,q,rasp; ^ user.cpp:8:16: warning: unused variable ‘mij’ [-Wunused-variable] int n,s,st,dr,mij,q,rasp; ^ user.cpp:8:20: warning: unused variable ‘q’ [-Wunused-variable] int n,s,st,dr,mij,q,rasp; ^ user.cpp:8:22: warning: unused variable ‘rasp’ [-Wunused-variable] int n,s,st,dr,mij,q,rasp; ^ user.cpp:9:31: 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); ^ 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("nrtri.out","w",stdout); ^ user.cpp:11:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:14:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^