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#include <iostream>
using namespace std;
void line_specs(int& length, char& material, const int& border_length);
void border(const int& border_length);
int main()
{
char yesno, line_type, material;
int length, foo;
const int border_length = 20;
// Program Introduction
cout << "Welcome to the line drawing program." << endl;
start:
cout << "Would you like to draw a line?" << endl;
cin >> yesno;
if ((yesno == 'n') || (yesno =='N'))
goto end;
else if ((yesno == 'y') || (yesno =='Y'))
{
border(border_length);
goto affirmative;
}
else
cout << "ERROR" << endl;
goto start;
// Line Type Splitting
affirmative:
cout << "Enter the line type." << endl;
cout << "'V' for vertical, 'H' for horizontal, 'F' for diagonal-foreward, or 'B' for diagonal-backward ." << endl;
cin >> line_type;
if ((line_type == 'v') || (line_type == 'V'))
goto vertical;
else if ((line_type == 'h') || (line_type == 'H'))
goto horizontal;
else if ((line_type == 'f') || (line_type == 'F'))
goto diagonal;
else if ((line_type == 'b') || (line_type == 'B'))
goto backward;
else
cout << "ERROR" << endl;
goto affirmative;
// Vertical Line
vertical:
border(border_length);
line_specs(length, material, border_length);
for (int i = 0; i < length; i++)
{
cout << material << endl;
}
goto ask;
// Horizontal Line
horizontal:
border(border_length);
line_specs(length, material, border_length);
for (int i = 0; i < length; i++)
{
cout << material << " ";
}
cout << endl;
goto ask;
// Diagonal-Foreward Line
diagonal:
border(border_length);
line_specs(length, material, border_length);
for (int i = 0; i < length; i++)
{
for (int x = i; x > 0; x--)
cout << " ";
cout << material << endl;
}
cout << endl;
goto ask;
// Diagonal-Backward Line
backward:
border(border_length);
line_specs(length, material, border_length);
foo = length;
for (int i = 0; i < length; i++)
{
for (int x = 0; x < foo; x++)
cout << " ";
cout << material << endl;
foo--;
}
cout << endl;
goto ask;
// Program Reapeat Junction
ask:
cout << "Would you like to draw another line?" << endl;
cin >> yesno;
if ((yesno == 'n') || (yesno == 'N'))
goto end;
else if ((yesno == 'y') || (yesno == 'Y'))
goto affirmative;
else
{
cout << "ERROR" << endl;
goto ask;
}
end:
return 0;
}
// Line Specification Function
void line_specs(int& length, char& material, int border_length)
{
cout << "Input the desired length of the line." << endl;
cin >> length;
border(border_length);
cout << "Input the desired character with which" << endl;
cout << "to build the line." << endl << endl;
cin >> material;
border(border_length);
}
//Border Formating Function
void border(const int& border_length)
{
for (int i = 0; i < border_length; i++)
cout << "- ";
cout << endl;
}
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