Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:78: error: lvalue required as increment operand user.cpp:78: error: expected ‘;’ before ‘i’ user.cpp:78: warning: 3rd expression in for has no effect user.cpp:58: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:59: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result