c++ that reads height and weight and print shapes

[adrian mamaclay]

#include <iostream>
#include <string.h>
 
using namespace std;
 
int main ()
 
{
    int ans, num, a, b, c, d;
    int h = 0;
    int w = 0;
    char ans2;
 
    cout << "[1] Math algorithms " << endl;
    cout << "[2] Figures " << endl;
    cout << "[3] Exit " << endl;
    cout << "Enter your choice. ";
        cin >> ans;
    cout << endl;
 
    if (ans == '2') {
        cout << endl;
        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;
                cout << " Print a Rectangle" << endl;
                cout << "  Enter Height. ";
                    cin >> h;
                cout << "    Enter Width. ";
                    cin >> w;
                    {
                        for (c=1; c<=h; c++)
                        {
                            for (d=1; d<=w; d++)
                            {
                                cout << "*";
                            }
                                    cout << endl;
                        }
                }
 
                else if (ans2 == 'b') 
                cout << endl;
                cout << "   Print a Triangle" << endl;
                cout << "    Enter a Number. ";
                    cin >> num;
                for (a = 1; a <= num; a++)
                {
                    for (b = 1; b <= a; b++)
                    {
                        cout << "*";
                    }
 
                    cout << endl;
 
                }
        }
    }
 
        cout << endl;
 
    return 0;
}
 
 

//please help, i am encountering syntax error which says "illegal else without matching if"

[whodgson]

It may be a lack of curly brackets after l 47

[Banfa]

Actually I think it is the random { at line 36, there is no syntactical problem with line 47 but the { at 36 means the } at 45 closes this rather than the { (for the if) at 29.

Because of this you are still inside the if code block when you try the else statement so there is no if to attach it to.