Функция с типом char, которая должна возвращать интовое значение

#include <iostream>
using namespace std;
char ArOfShp (int);
void main ()
{
    int sqsd;
    cout << "Enter square side: ";
    cin >> sqsd;
    cout << "The square area is: " << (int)ArOfShp (sqsd) << "\n\n";
system ("pause");
}
 
char ArOfShp (char a)
{
    int c;
    return c=a*a;
}

#include <iostream>
using namespace std;
char ArOfShp (int);
int main ()
{
    int sqsd;
    cout << "Enter square side: ";
    /*cin >> sqsd;*/sqsd = 11;
    cout << "The square area is: " << (int)ArOfShp (sqsd) << "\n\n";
    return 0;
}
 
char ArOfShp (int a)
{
    int c;
    return c=a*a;
}

#include <iostream>
using namespace std;
unsigned char ArOfShp (int);
int main ()
{
    int sqsd;
    cout << "Enter square side: ";
    /*cin >> sqsd;*/sqsd = 14;
    cout << "The square area is: " << (int)ArOfShp (sqsd) << "\n\n";
    return 0;
}
 
unsigned char ArOfShp (int a)
{
    int c;
    return c=a*a;
}

#include <iostream>
using namespace std;
int ArOfShp (int);
int main ()
{
    int sqsd;
    cout << "Enter square side: ";
    cin >> sqsd;
    cout << "The square area is: " << ArOfShp (sqsd) << "\n\n";
}
 
int ArOfShp (int a)
{
    int c;
    return c=a*a;
}

#include <iostream>
using namespace std;
unsigned char ArOfShp (int);
int f(int c);
int main ()
{
    int sqsd;
    cout << "Enter square side: ";
    /*cin >> sqsd;*/sqsd = 14;
    cout << "The square area is: " << (int)ArOfShp (sqsd) << "\n\n";
    return 0;
}
 
unsigned char ArOfShp (int a)
{
return   f(a);
}
int f(int c){
int a=c;
    return a=a*a
}