Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:51:22: error: ‘n’ was not declared in this scope scanf("%d%d%d", &n,&m,&k); ^ user.cpp:51:25: error: ‘m’ was not declared in this scope scanf("%d%d%d", &n,&m,&k); ^ user.cpp:49:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("radiatie.in","r",stdin); ^ user.cpp:50:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("radiatie.out","w",stdout); ^ user.cpp:53:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &v[i].x,&v[i].y,&v[i].cost); ^