Eroare de compilare: user.cpp: In function ‘int cmp(const void*, const void*)’: user.cpp:25: error: ‘strcmp’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:38: warning: format ‘%s’ expects type ‘char*’, but argument 2 has type ‘char (*)[101]’ user.cpp:39: error: ‘strlen’ was not declared in this scope user.cpp:48: error: ‘strcpy’ was not declared in this scope user.cpp:30: warning: unused variable ‘cw’ user.cpp:30: warning: unused variable ‘la’ user.cpp:30: warning: unused variable ‘lc’ user.cpp:30: warning: unused variable ‘lp’ user.cpp:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:106: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result