Eroare de compilare: user.cpp: In function ‘pct urmatorul_varf(long int)’: user.cpp:6: error: ‘a’ was not declared in this scope user.cpp:6: error: ‘s’ was not declared in this scope user.cpp:6: error: ‘p’ was not declared in this scope user.cpp: In function ‘pct varf(long int)’: user.cpp:9: error: ‘a’ was not declared in this scope user.cpp:9: error: ‘s’ was not declared in this scope user.cpp:9: error: ‘p’ was not declared in this scope user.cpp: In function ‘void graham()’: user.cpp:18: error: ‘p’ was not declared in this scope user.cpp:19: error: ‘s’ was not declared in this scope user.cpp:23: error: ‘i’ was not declared in this scope user.cpp:23: error: ‘N’ was not declared in this scope user.cpp:24: error: ‘a’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:34: error: ‘N’ was not declared in this scope user.cpp:34: error: ‘K’ was not declared in this scope user.cpp:36: error: ‘i’ was not declared in this scope user.cpp:37: error: ‘a’ was not declared in this scope user.cpp:44: error: ‘a’ was not declared in this scope user.cpp:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result