Hey guys, I'm having a little trouble with writing norms and then putting them into classes, I'm doing a masters at university and we've got a programming course, and so far my life experience of C++ is four hours of lectures so what I'm going to write is probably quite off the mark, anyway I'm trying to calculate the 1, 2 and sup (infinity) norms of vectors in C++ and then put these functions into "a class with hidden i.e. private data structures of vectors". Here is what I've done for the vectors, I appreciate it probably reads similar to how a child trying to play a concerto on a violin after four hours practice would sound, but here goes: #include <iostream> #include <vector> #include <string> #include <cmath> using namespace std; int i,n; vector<double> v(n); string onenorm, twonorm, infinitynorm; //Calculating The 1 Norm int main () { cout<<"Input size of vector"<<endl; cin>>n; //cout<< "Input the values of the vector you wish to have"; double sum [i]; sum[0]=0; for (int i=0; i<=n-1; i++) { sum[i+1]= sum[i] + abs(v[i]); } onenorm=sum[n-1]; int p; double pow (double& Variable,double& p) //Calculating the 2 Norm double sumtwonorm[i]; sumtwonorm[0]=0; for (i=0; i<=n-1; i++) { sumtwonorm[i+1]= sum [i] + pow (double V[i],int 2); } twonorm = pow (double sumtwonorm[n-1], double 1/2); //Calculating the Infinity Norm for (i=0; i<=n-1; i++) { infinitynorm=0; if ( V[i]>infinitynorm infinitynorm=V[i]); } /* infinity norm should hopefully now be given by typing e.g cout<< infinitynorm; */ } Could anyone give me any pointers as to what to do?

So you're trying to do what, take what you have and turn it into a class?