Compilare: main.cpp: In function 'void adaug2(nod2*&, int, int, int)': main.cpp:39:13: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(q->fel>=1&&nn==-1||q->fel<=-1&&nn==1)q->fel+=nn; ~~~~~~~~~^~~~~~~~ main.cpp: In function 'int main()': main.cpp:79:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("biperm.in","r",stdin); ^ main.cpp:80:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("biperm.out","w",stdout); ^ main.cpp:81:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:82:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) scanf("%d",&v1[i]); ^ main.cpp:83:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) {scanf("%d",&v2[i]); ^