Eroare de compilare: user.cpp: In function ‘void invmod(long long int)’: user.cpp:10:13: error: ‘mod’ was not declared in this scope int var=mod-2, rez=1; ^ user.cpp:15:13: error: ‘rez’ was not declared in this scope rez = (1LL*x*rez)%mod; ^ user.cpp:20:16: error: ‘rez’ was not declared in this scope return rez; ^ user.cpp:20:16: error: return-statement with a value, in function returning 'void' [-fpermissive] user.cpp: In function ‘int main()’: user.cpp:24:15: error: ‘mod’ was not declared in this scope f >> a >> mod; ^