Compilare: user.cpp: In function ‘int main()’: user.cpp:122:43: warning: statement has no effect [-Wunused-value] eprintf("scc[%d] = %d\n",i,scc[i]); ^ user.cpp:170:66: warning: statement has no effect [-Wunused-value] eprintf("u : %d, topo : %d, cnt : %d\n",u,topo,cnt[topo]); ^ user.cpp:94:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drumuri5.in","r",stdin); ^ user.cpp:95:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drumuri5.out","w",stdout); ^ user.cpp: In function ‘int read()’: user.cpp:39:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] inline int read(){int x;scanf(" %d",&x);return x;} ^