Eroare de compilare: user.c:1:18: fstream: No such file or directory user.c:2:19: iostream: No such file or directory user.c:3:17: string: No such file or directory user.c:4: error: syntax error before "namespace" user.c:4: warning: type defaults to `int' in declaration of `std' user.c:4: warning: data definition has no type or storage class user.c: In function `main': user.c:9: error: `ifstream' undeclared (first use in this function) user.c:9: error: (Each undeclared identifier is reported only once user.c:9: error: for each function it appears in.) user.c:9: error: syntax error before "fin" user.c:10: error: `ofstream' undeclared (first use in this function) user.c:11: error: `fin' undeclared (first use in this function) user.c:12: warning: implicit declaration of function `strlwr' user.c:13: warning: implicit declaration of function `strtok' user.c:13: warning: assignment makes pointer from integer without a cast user.c:16: warning: implicit declaration of function `strlen' user.c:18: error: `NULL' undeclared (first use in this function) user.c:18: warning: assignment makes pointer from integer without a cast user.c:20: error: `fout' undeclared (first use in this function)