Compilare: user.cpp: In function ‘int main()’: user.cpp:100:67: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘char*’ [-Wformat=] fscanf(f, "%d %d %d", &query[i].task, &query[i].a, &query[i].b); ^ user.cpp:95:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("photoshop.out", "w", stdout); ^ user.cpp:97:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &N); ^ user.cpp:100:68: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &query[i].task, &query[i].a, &query[i].b); ^ user.cpp:109:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &query[i].c, &query[i].d); ^