Compilare: user.cpp: In function ‘int main()’: user.cpp:36:31: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] for (i=n;i>=1;i--) if (dif>0) if (a[v[i]]-a[1]<=dif) {dif=dif-(a[v[i]]-a[1]); v[i]=1;} ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("7segmente.in","r",stdin); ^ user.cpp:12:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("7segmente.out","w",stdout); ^ user.cpp:13:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(sir); ^ /tmp/ccS94Nep.o: In function `main': user.cpp:(.text.startup+0x5b): warning: the `gets' function is dangerous and should not be used.