Compilare: user.cpp: In function ‘int main()’: user.cpp:59:13: warning: unused variable ‘st’ [-Wunused-variable] int T,i,st,dr,mid; ^ user.cpp:59:16: warning: unused variable ‘dr’ [-Wunused-variable] int T,i,st,dr,mid; ^ user.cpp:59:19: warning: unused variable ‘mid’ [-Wunused-variable] int T,i,st,dr,mid; ^ user.cpp: In function ‘void citeste(long long int&)’: user.cpp:18:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp:24:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:56:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dif2.in","r",stdin); ^ user.cpp:57:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dif2.out","w",stdout); ^ user.cpp:62:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&T); ^ user.cpp:66:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:81:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %lld %lld",&N,&p1,&p2); ^ user.cpp: In function ‘long long int find_value(long long int)’: user.cpp:52:18: warning: ‘ans’ may be used uninitialized in this function [-Wmaybe-uninitialized] return ans + 1; ^