Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp:2: error: expected constructor, destructor, or type conversion before ‘*’ token user.cpp: In function ‘int main()’: user.cpp:7: error: ‘A’ was not declared in this scope user.cpp:7: error: ‘fopen’ was not declared in this scope user.cpp:8: error: ‘B’ was not declared in this scope user.cpp:9: error: ‘fscanf’ was not declared in this scope user.cpp:17: error: ‘fprintf’ was not declared in this scope user.cpp:18: error: ‘fclose’ was not declared in this scope