Eroare de compilare: user.cpp:2:21: error: iostream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:16: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[2000001]’ user.cpp:16: warning: format ‘%s’ expects type ‘char*’, but argument 4 has type ‘char (*)[2000001]’ user.cpp:16: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result