Compilare: user.cpp: In function ‘int main()’: user.cpp:13:13: warning: unused variable ‘x’ [-Wunused-variable] int n,i,x,nr=0,k=1,maax=0,poz,s=0; ^ user.cpp:9:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsecv.in","r",stdin); ^ user.cpp:10:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxsecv.out","w",stdout); ^ user.cpp:41:20: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum[poz]=-1; ^