Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp:2:20: error: fstream.h: No such file or directory user.cpp: In function ‘void citiregraf()’: user.cpp:4: error: ‘ifstream’ was not declared in this scope user.cpp:4: error: expected ‘;’ before ‘f’ user.cpp:5: error: ‘f’ was not declared in this scope user.cpp: At global scope: user.cpp:8: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:9: error: ‘cout’ was not declared in this scope user.cpp:9: error: ‘cin’ was not declared in this scope user.cpp:14: warning: statement has no effect user.cpp:8: warning: unused variable ‘j’