bool isspecial (char ch)
{
if ((int)ch==20 || (int)ch==22)
{
	return true;
}
return false;
}






char changeLower (char ch)
{
char chr;
while (ch!='z')
{
ch++;
chr=toupper(ch);
return chr;
}
if (ch=='z')
{
chr = 'A';
return chr;
}
}






char changeUpper (char ch)
{
char chr;
while (ch!='A')
{
ch--;
chr=tolower(ch);
return chr;
}
if (ch=='A')
{
chr = 'z';
return chr;
}
}






char changePunct (char ch)
{
switch (ch)
{
case ')':
ch = '0';
break;

case '!':
ch = '1';
break;

case '@':
ch = '2';
break;

case '#':
ch = '3';
break;

case '$':
ch = '4';
break;

case '%':
ch = '5';
break;

case '^':
ch = '6';
break;

case '&':
ch = '7';
break;

case '*':
ch = '8';
break;

case '(':
ch = '9';
break;
}

return ch;
}






char changeDigit (char ch)
{
switch (ch)
{

case '9':
ch = ',';
break;

case '8':
ch = '\"';
break;

case '7':
ch = '!';
break;

case '6':
ch = ';';
break;

case '5':
ch = '?';
break;

case '4':
ch = '\'';
break;

case '3':
ch = '(';
break;

case '2':
ch = ')';
break;

case '1':
ch = '.';
break;

case '0':
ch = '-';
break;
}

return ch;
}





char changeSpecial (char ch)
{
switch((int)ch)
{
case 22:
ch= ' ';
break;
case 20:
ch= '\n';
break;
}
return ch;
}