Eroare de compilare: user.c:1:20: fstream.h: No such file or directory user.c:4: error: syntax error before "fin" user.c:4: warning: type defaults to `int' in declaration of `fin' user.c:4: warning: data definition has no type or storage class user.c:5: error: syntax error before "fout" user.c:5: warning: type defaults to `int' in declaration of `fout' user.c:5: warning: data definition has no type or storage class user.c: In function `citire': user.c:21: error: invalid operands to binary >> user.c: In function `rezolva': user.c:199: error: invalid operands to binary <<