#include <iostream>
#include <math.h>
#include <string>
using namespace std;

//Math functions (censored)

int main()
{
char A='A', S='S', M='M', D='D', s='s', E='E';
string options;
float a, b, c, d, e, f, g, h, i, r;

do
{
printf ("What would you like to do?\n \n A - Addition\n S - Subtraction\n M - Multiplication\n D - Division\n s - Square Root\n E - Exit\n \n");

cin >> options;

if (options == "A")
{
//Addition
}

else if (options == "S")
{
//Subtraction
}

else if (options == "M")
{
//Multiplication
}

else if (options == "D")
{
//Division
}

else if (options == "s")
{
//Square Root
}

else if (options == "E")
{
return 0;
}

else
{
printf ("\n");
printf ("Incorrect symbol\n");
}

printf ("\n");

} while (options == 'A'|'S'|'M'|'D'|'E'|'s');
}