Compilare: user.cpp: In function ‘int main()’: user.cpp:92:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &q); ^ user.cpp:95:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i].dim); ^ user.cpp:98:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i].v[j]); ^ user.cpp:106:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &op, &x, &y); ^ user.cpp: In function ‘int BinarySearch(int, int)’: user.cpp:39:42: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] int left = 1, right = a[line].dim, mid, pos; ^ user.cpp: In function ‘bool Verify(int, int, int, int)’: user.cpp:58:31: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] cnt1 += BinarySearch(i, val); ^ user.cpp: In function ‘int Task2(int, int)’: user.cpp:87:9: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] return pos; ^ user.cpp:58:31: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] cnt1 += BinarySearch(i, val); ^ user.cpp:39:42: note: ‘pos’ was declared here int left = 1, right = a[line].dim, mid, pos; ^