Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream in("invers modular.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream out("invers modular.out"); ^ user.cpp: In function ‘int main()’: user.cpp:9:5: error: ‘in’ was not declared in this scope in>>a>>n; ^ user.cpp:26:5: error: ‘out’ was not declared in this scope out<<nr%n; ^ user.cpp:8:13: warning: unused variable ‘i’ [-Wunused-variable] int a,n,i,f=0,p,nr,p2=1; ^