#include <iostream>
#include <string>
using namespace std;
int GCD(int x, int y);
int main ()
{
int ans, num, a, b, c, d, e, f, g, y;
int h = 0;
int w = 0;
char ans2;
char ans3;
cout << "[1] Math algorithms " << endl;
cout << "[2] Figures " << endl;
cout << "[3] Exit " << endl;
cout << "Enter your choice. ";
cin >> ans;
cout << endl;
if (ans == 1)
{
cout << endl;
cout << " [e] Use the EUCLIDEAN algorithm " << endl;
cout << " [f] Generate an ULAM sequence " << endl;
cout << " [g] Generate a FIBONACCI Sequence " << endl;
cout << " [y] Use FERMAT's little test " << endl;
cout << " Enter your choice. ";
cin >> ans3;
if (ans3 == 'e')
cout << endl;
{
int x,y,temp, remainder;
// read in the two integers
cout << endl ;
cout << "Enter the first number (positive integer) : " ;
cin >> x ;
cout << "Enter the second number (positive integer) : " ;
cin >> y ;
//echo inputs
cout << "Input numbers are: " << x << " , " << y << endl ;
if(x < y)
{ // exchange values of x and y
x=x+y;
y=x-y;
x=x-y;
}
/* At this point we will always have x >= y */
//Initialize remainder.
while ( (x%y)!=0 )
{
x=x%y;
x=x+y;
y=x-y;
x=x-y;
}
// display the result
cout << endl ;
cout << "The GCD is: " << y << endl ;
system("pause>nul");
}
else if (ans3 == 'f')
{
int iCount = 1;
int numb;
cout<<"enter a number: ";
cin>>numb;
int iTemp = numb;
while (iTemp != 1)
{
if (iTemp % 2 == 0)
{
iTemp /= 2;
}
else
{
iTemp = iTemp * 3 + 1;
}
++iCount;
}
cout << "Cycle length of " << numb << " is " << iCount << endl;
system ("pause");
}
}
if (ans == 2);
{
cout << " [a] Print a Rectangle " << endl;
cout << " [b] Print a Triangle " << endl;
cout << " [c] Print a Rectangle Outline " << endl;
cout << " Enter your choice. ";
cin >> ans2;
{
if (ans2 == 'a')
cout << endl;
{ int width, height;
cout<< "input height and width as: x[enter], y[enter]"<<'\n';
while (cin >> width >> height)
{
for (int row=0; row<height; row++)
{
for (int col=0; col<width; col++)
{
cout << "*";
}
cout << endl; // end the line of stars.
}
}
}
if (ans2 == 'b')
cout << endl;
{
int size;
cout<<"INPUT the Size of the TRIANGLE"<<'\n';
while (cin >> size)
{
for (int row=1; row<=size; row++)
{
for (int col=0; col<row; col++)
{
cout << "*";
}
cout << endl;
}
}
}
if (ans2 == 'c')
cout << endl;
{
{
int MyRow, MyCol; char MyChar; //this are my variables
cout << "WELCOME TO THE RECTANGLE PROGRAM" << endl << endl;
cout << "Enter any character to be the outline of the rectangle: "; //this will prompt for a character to be used for drawing the rectangle
cin >> MyChar;
cout << "Enter the number of columns (up to 79): "; //this will prompt for the number of columns the rectangle will have
cin >> MyCol;
cout << "Enter the number of rows (up to 22): "; //this will prompt for the number of rows the rectangle will have
cin >> MyRow;
string spaces( MyCol-2, ' ' ); // this string "spaces" will draw as many spaces as the user input for columns minus 2
if ((MyCol <= 79) && (MyRow <= 22))
{ //this "if" is to limit the number of columns and rows to 79 and 22 respectively
for ( int y = 0; y < MyCol; y++) //this "for" loop will draw the top row
{
cout << MyChar;
}
for ( int y = 2; y < MyRow; y++) //this "for" loop will draw the rows in the middle
{
cout <<"\n"<< MyChar << spaces << MyChar; //it consist of a starting character, empty spaces, and an ending character
}
cout<< endl; //this creates a new line for the bottom row
for ( int y = 0; y < MyCol; y++) //this is the bottom row. Just like the top row
{
cout << MyChar;
}
cout<< endl; //this creates a new line for any message to appear below the rectangle
}
}
}
}
}
return 0;}The error is at line 121. I cant compile this code due to the error. please help me
