Eroare de compilare: user.cpp: In function ‘int expr()’: user.cpp:6: error: ‘p’ was not declared in this scope user.cpp:7: error: expected primary-expression before ‘}’ token user.cpp:7: error: expected ‘;’ before ‘}’ token user.cpp:5: warning: unused variable ‘x’ user.cpp:5: warning: unused variable ‘semn’ user.cpp:7: warning: no return statement in function returning non-void user.cpp: In function ‘int eval()’: user.cpp:15: error: ‘p’ was not declared in this scope user.cpp:15: error: expected primary-expression before ‘>=’ token user.cpp:19: error: ‘p’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:49: error: ‘s’ was not declared in this scope user.cpp:51: error: ‘i’ was not declared in this scope user.cpp:54: error: expected ‘)’ before ‘f’ user.cpp:57: error: ‘p’ was not declared in this scope user.cpp:59: error: ‘n’ was not declared in this scope user.cpp:61: error: ‘i’ was not declared in this scope user.cpp:63: error: ‘z’ was not declared in this scope user.cpp:64: error: ‘f’ was not declared in this scope user.cpp:66: error: expected ‘;’ before ‘else’ user.cpp:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result