Eroare de compilare: user.c:1:21: error: fstream: No such file or directory user.c:2:22: error: iostream: No such file or directory user.c:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace' user.c:7: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'f' user.c:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'g' user.c:12: warning: return type defaults to 'int' user.c: In function 'main': user.c:12: error: 'f' undeclared (first use in this function) user.c:12: error: (Each undeclared identifier is reported only once user.c:12: error: for each function it appears in.) user.c:22: error: 'g' undeclared (first use in this function) user.c:24:4: warning: no newline at end of file