Compilare: user.cpp: In function ‘int main()’: user.cpp:89:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&m); ^ user.cpp: In function ‘int val()’: user.cpp:45:19: warning: ‘rasp’ may be used uninitialized in this function [-Wmaybe-uninitialized] rasp=(rasp+1)%2; ^