Compilare: main.cpp: In function 'int main()': main.cpp:17:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:19:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&x); ^ main.cpp:49:10: warning: 'com' may be used uninitialized in this function [-Wmaybe-uninitialized] x=com; ~^~~~