Compilare: user.cpp: In function ‘void bkt(int)’: user.cpp:49:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (!ok) ^ user.cpp: In function ‘void citire()’: user.cpp:33:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d", &n, &m, &nr); ^ user.cpp:35:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(fin,"%d %d", &x, &y); ^