Compilare: main.cpp: In member function 'int aib::query2(int, int)': main.cpp:22:18: warning: variable 'val' set but not used [-Wunused-but-set-variable] int sum, val, p = 0, i = 1; ^~~ main.cpp: In function 'int main()': main.cpp:72:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &q); ^ main.cpp:74:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^ main.cpp:85:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &t, &st, &dr); ^ main.cpp:87:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^