i cant get this program to work
Code:
// program that uses switch statement to allow the user the choose what memeber //function to be tested
#include<iostream>
using namespace std;
#include<vector>
using std::vector;
#include <iomanip>
using std::setw;
void pop_back();//removes the last element from vector
void push_back(const T& x);//stores a value in the last element of the vector
void resize ( size_type sz, T c = T() );//change the size of vector
void clear();//clears vectore from all elements
void reverse();//reverse the oreder of the element in vector
void outputVector( const vector< int > & );
void inputVector( vector< int > & );
vector < int> integers (5); //vector declaration
int main()
{
int function;// switch statement variable
cout <<"Size of vector integers is "<< integers.size()
<<"\nvector after initialization" << endl;
outputVector( integers );
cout << "\nEnter 5 integers:"<< endl;
inputVector( integers );
cout <<"\nAfter input, the vectors contain:\n"
<<"integers" << endl;
outputVector( integers );
cout<<" Enter a number to choose function\n";
<<"1 to pop_back\n";
<<"2 to push_back\n";
<<"3 to resize\n;
<<"4 to clear vector\n"
<<"5 to reverse vectore"<<endl;
cin>>function;
while (function != EOF)
{
switch (function)
{
case 1:
cout<<" the new vector is"<<integers.pop_back()<<endl;
break;
case 2:
cout<<" the new vectore is"<<integers.push_back()<<endl;
break;
case 3:
cout<<" the new vector is"<<integers.resize(7,11)<<endl;
break;
case 4:
cout<<the new vector is"<<integers.clear()<<endl;
break;
case 5:
cout<<"the new vector is "<<integers.reverse()<<endl;
break;
default:
cout<<"incorrect function number"
<<"enter a new function number"<<endl;
break;
}//end switch
}//end while
return 0;
}// end main
void pop_back()
{
for( size_t i = 0; i < integers.size(); i++)
{
cout<<setw(12)<<integers[i];
}
}
void push_back(const T& x)
{
for (size_t i =0; i < integers.size(); i++)
{
cout<<setw(12)<<integers.push_back(7);
}
}
void clear()
{
for ( size_t i= 0; i < integers.size(); i++)
{
cout<<setw(12)<<integers.clear();
}
}
void resize( size_type sz, T c = T() )
{
for ( size_t i =0; i < integers.size(); i++)
{
cout<<setw(12)<<integers.resize(7,11);
}
}
void reverse()
{
for(size_t i = 0; i<integers.size(); i++)
{
cout<<setw(12)<<integers.reverse();
}
}
void outputVector( const vector< int > &array )
{
size_t i; // declare control variable
for ( i = 0; i < array.size() ; i++ )
{
cout << setw( 12 ) << array[ i ] ;
if (( i + 1 ) % 4 == 0 ) // 4 numbers per row of output
cout << endl;
} // end for
if ( i % 4 != 0 )
cout << endl;
} // end function outputVector
// input vector contents
void inputVector( vector< int > &array )
{
for ( size_t i = 0; i < array.size(); i++ )
cin >> array[ i ] ;
} // end function inputVector
