Compilare: user.cpp: In function ‘int main()’: user.cpp:4:239: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] using namespace std;char c[4001];int a=0,b=0,rez=0;ifstream fin("readunare.in");ofstream fout("readunare.out");void Afij(int cr){fout<<"{";for(int i=cr-1;i>=1;i--)Afij(i),fout<<",";fout<<"{}}";;}int main(){int i;fin>>c;for(i=0; i<strlen(c);i++)if(c[i]=='{')a++;fin>>c;for(i=0;i<strlen(c);i++)if(c[i]=='{')b++;for(i=a;i>1;i>>=1)rez++;for(i=b;i>1;i>>=1)rez++;if(rez)Afij(rez);else fout<<"{}";fout<<'\n';return 0;} ^ user.cpp:4:287: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] using namespace std;char c[4001];int a=0,b=0,rez=0;ifstream fin("readunare.in");ofstream fout("readunare.out");void Afij(int cr){fout<<"{";for(int i=cr-1;i>=1;i--)Afij(i),fout<<",";fout<<"{}}";;}int main(){int i;fin>>c;for(i=0; i<strlen(c);i++)if(c[i]=='{')a++;fin>>c;for(i=0;i<strlen(c);i++)if(c[i]=='{')b++;for(i=a;i>1;i>>=1)rez++;for(i=b;i>1;i>>=1)rez++;if(rez)Afij(rez);else fout<<"{}";fout<<'\n';return 0;} ^