Borderou de evaluare (job #545812)

Eroare de compilare: user.cpp: In function ‘void transforma(char*)’: user.cpp:9:20: error: ‘strlen’ was not declared in this scope user.cpp:10:21: error: ‘strncat’ was not declared in this scope user.cpp:11:23: error: ‘strcpy’ was not declared in this scope user.cpp: In function ‘int verifica(unsigned int, unsigned int)’: user.cpp:20:22: error: ‘strcmp’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:30:1: error: ‘ifstream’ was not declared in this scope user.cpp:30:1: note: suggested alternative: /usr/include/c++/4.6/iosfwd:159:34: note: ‘std::ifstream’ user.cpp:30:10: error: expected ‘;’ before ‘f’ user.cpp:31:1: error: ‘ofstream’ was not declared in this scope user.cpp:31:1: note: suggested alternative: /usr/include/c++/4.6/iosfwd:162:34: note: ‘std::ofstream’ user.cpp:31:10: error: expected ‘;’ before ‘g’ user.cpp:32:1: error: ‘f’ was not declared in this scope user.cpp:33:16: error: ‘strtok’ was not declared in this scope user.cpp:35:20: error: ‘strcpy’ was not declared in this scope user.cpp:44:29: error: ‘strlen’ was not declared in this scope user.cpp:46:23: error: ‘strcpy’ was not declared in this scope user.cpp:52:8: warning: the address of ‘poz’ will always evaluate as ‘true’ [-Waddress] user.cpp:52:10: error: ‘g’ was not declared in this scope user.cpp:52:31: error: ‘g’ was not declared in this scope user.cpp:54:2: error: ‘g’ was not declared in this scope user.cpp:57:1: error: ‘g’ was not declared in this scope