Simple Calculator Problem

[TheSnowman]

Here is the code for my simple calculator:

#include <iostream>

using namespace std;

float a;
float b;
char c;
float d;


int main() {
cout<<" Calculator \n Enter your equation with each action being followed by enter\n";
cin>> a;
cin>> c;
cin>> b;
switch (c) {
case '+':
         d == a + b;
         cout<<"=\n" <<d<< endl;
         break;
case '-':
         d == a - b;
         cout<<"=\n" <<d<< endl;
         break;
case '*':
         d == a * b;
         cout<<"=\n" <<d<< endl;
         break;
case '/':
         d == a / b;

         cout<<"=\n"<< "" << d << endl;
         break;
default:
        cout<<"Invalid\n Try Again";

}

}

The output works great except no matter what numbers / operations I input it always comes out with 0 I know that it is reaching the cout that displays the output because the = is displayed but it always says 0. Any help would be appreciated.
Thanks!

[rcast]

You have not used the assignment operator for each case of your switch, you've used the equals too. Change == to = in lines 18, 22, 26, and 30

[TheSnowman]

worked great thanks so much for your help