Eroare de compilare: /usr/include/string.h: In function ‘int main()’: /usr/include/string.h:397: error: too few arguments to function ‘size_t strlen(const char*)’ user.cpp:47: error: at this point in file user.cpp:23: warning: unused variable ‘nr’ user.cpp:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result