raw code: Integer Array Pre-Calculation [ easiest, user friendly and OOr ]

#include<iostream>
using namespace std;

int n, ar[100];

void takin()
{
cout <<"number of element: "; cin>> n;

cout <<"put in the elements: ";
for(int x=0; x<n; x++)
{
cin>> ar[x];
}
}

void show()
{
cout <<"\nelements are: ";
for(int y=0; y<n; y++)
{
cout <<ar[y] <<' ';
}

}

void precal()
{
cout <<"\n\nPre-Cal: ";
for(int z=0; z<n; z++)
{
ar[z+1]+=ar[z];
cout <<ar[z] <<' ';
}
}

int main()
{
takin(); show(); precal();
cout <<endl<<endl<<endl<<endl<<endl;
return 777;
}