Thread: My first program

Hi all,

I am creating a calculator with the ability to calculate speed, distance and time for my first program, and I am almost finished. I just have one problem:

The program starts with a selection menu, asking the user to enter 1, 2 or 3 to take them to the speed, distance and time calculators. I have the following code:

Code:

#include <iostream>
using namespace std;

int main ()
{
	
  // declaring variables:
  float s, d, t, a;
  

  // process:
  s = 0;
  d = 0;
  t = 0;
  
  a = 0;

start8:
  cout << "Type 1 (speed), 2 (distance) or 3 (time) and press enter: ";
  cin >> a;
  if (a = 1)
  goto start1;
  if (a = 2)
  goto One2;
  if (a = 3)
  goto Two3;

With the code for each of the different calculators underneath, in the following setup:

Code:

start1:
 cout << "To get speed (m/s), enter distance (m), and press enter: ";
 cin >> d;
 cout << "To get speed (m/s), enter time (s), and press enter: ";
 cin >> t;
 s = d / t;
 cout << "\n";
 cout << "Speed (m/s) is: ";
 cout << s;
 cout << "\n";
 cout << "\n";
 goto start8;

 one2:
 cout << "To get distance (m), enter speed (m/s), and press enter: ";
 cin >> s;
 cout << "To get distance (m), enter time (s), and press enter: ";
 cin >> t;
 d = s * t;
 cout << "\n";
 cout << "Distance (m) is: ";
 cout << d;
 cout << "\n";
 cout << "\n";
 goto start8;

 two3:
 cout << "To get time (s), enter distance (m), and press enter: ";
 cin >> d;
 cout << "To get time (s), enter speed (m/s), and press enter: ";
 cin >> s;
 t = d / s;
 cout << "\n";
 cout << "Time (s) is: ";
 cout << t;
 cout << "\n";
 cout << "\n";
 goto start8;

return 0;
}

The problem is that whether I enter one, two or three at the beginning of the program, I always get directed to the speed calculator. What do I need to do to be able to access the other two by entering 2 and 3 at the beginning?

Thanks.

This is assignment.

Code:

if (a = 1)

Compare instead

Code:

if (a == 1)

Kurt

Great, it works. Thanks!