Compilare: user.cpp: In function ‘int main()’: user.cpp:17:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^ user.cpp: In function ‘bool verif(int)’: user.cpp:12:11: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(s%2==0) return true; ^ user.cpp: In function ‘int main()’: user.cpp:12:11: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:7:9: note: ‘s’ was declared here int s; ^ user.cpp:12:11: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(s%2==0) return true; ^ user.cpp:7:9: note: ‘s’ was declared here int s; ^