Compilare: user.cpp: In function ‘int main()’: user.cpp:22:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n %d %d %d" ,&p,&n,&m,&k); ^ user.cpp:27:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d",&x,&y,&z,&t); ^ user.cpp:53:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d",&x,&y,&z,&t); ^ user.cpp:41:13: warning: ‘r’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(i != r && e[i].l < maxim-2 && e[i].c < maxim-2) ^