Compilare: user.cpp: In function ‘void citire()’: user.cpp:104:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<nr_buc[x1] && poz + v1[x1][j].size()< y1+1;++j) ^ user.cpp:114:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<nr_buc[x2] && poz1+v1[x2][j].size() < y2+1 ; ++j) ^ user.cpp:95:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d", &n, &k); ^ user.cpp:101:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d", &x1,&y1,&x2,&y2); ^