Compilare: user.cpp: In function ‘void lee()’: user.cpp:49:13: warning: unused variable ‘lim’ [-Wunused-variable] int lim = vec[ind].size(); ^ user.cpp: In function ‘int main()’: user.cpp:95:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d %d %d",&n,&m,&l0,&c0,&lf,&cf); ^ user.cpp:98:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i][j]); ^