Compilare: user.cpp: In function ‘int para()’: user.cpp:51:9: warning: unused variable ‘n’ [-Wunused-variable] int n=0,s=0,i,z=-100000000,x; ^ user.cpp:51:17: warning: unused variable ‘i’ [-Wunused-variable] int n=0,s=0,i,z=-100000000,x; ^ user.cpp: In function ‘int main()’: user.cpp:103:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.in","r",stdin); ^ user.cpp:104:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.out","w",stdout); ^