Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:71:16: error: ‘read’ was not declared in this scope int t=read(),k=read(); ^ user.cpp:72:9: error: ‘k’ was not declared in this scope n = k; ^ user.cpp:70:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triangles.out","w",stdout); ^