Compilare: user.cpp: In function ‘void citesc_date(const char*)’: user.cpp:68:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &nr_linii, &nr_col); ^ user.cpp:71:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%*c"); ^ user.cpp:75:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c, 101, f); ^ user.cpp: In function ‘solution solve()’: user.cpp:147:31: warning: ‘j_min’ may be used uninitialized in this function [-Wmaybe-uninitialized] return {{i_min + 1, j_min + 1}, d_min}; ~~~~~~^~~ user.cpp:147:20: warning: ‘i_min’ may be used uninitialized in this function [-Wmaybe-uninitialized] return {{i_min + 1, j_min + 1}, d_min}; ~~~~~~^~~