Compilare: user.cpp: In function ‘int main()’: user.cpp:235:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kthvalue.in", "r", stdin); ^ user.cpp:238:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, Lg, stdin); ^ user.cpp: In function ‘void Read(int&)’: user.cpp:16:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for(;!(Buffer[poz]>='0' && Buffer[poz]<='9');verf); ^ user.cpp:17:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for(x=0;Buffer[poz]>='0' && Buffer[poz]<='9';x=x*10+Buffer[poz]-'0',verf); ^ user.cpp: In function ‘int main()’: user.cpp:252:42: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] queries[t] = Query(type, x, y, k); ^ user.cpp:252:42: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:252:42: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized]