Eroare de compilare: user.cpp:5:1: error: ‘ifstream’ does not name a type ifstream f("trompeta.in"); ^ user.cpp:6:1: error: ‘ofstream’ does not name a type ofstream g("trompeta.out"); ^ user.cpp:7:1: error: ‘stack’ does not name a type stack <char> st; ^ user.cpp: In function ‘int main()’: user.cpp:12:5: error: ‘f’ was not declared in this scope f >> a >> b; ^ user.cpp:17:5: error: ‘st’ was not declared in this scope st.push(v[i++]); ^ user.cpp:36:21: error: ‘g’ was not declared in this scope reverse(c,c+k); g<<c; ^