initial

src/Complex.java

@@ -29,25 +29,36 @@ public class Complex {
 
   public double magnitude()
   {
-    return 1.0;
+    return Math.sqrt(real*real + imag*imag);
   }
 
   public double argument()
   {
-    return 1.0;
+    return Math.atan2(imag, real);
   }
 
   public String toString()
   {
-    return "";
+    String ans="";
+    if (real ==0){
+      ans="j"+imag;
+    }else if (imag==0){
+      ans=Double.toString(real);
+    }else if(imag<0){
+      ans = Double.toString(real)+ " - " + "j"+Math.abs(imag);
+    }else{
+      ans=Double.toString(real)+ " + "+"j"+imag;
+    }
+    return ans;
   }
   
   public Complex add(Complex complexNum)
   {
     Complex answer = new Complex(0.0,0.0);
+    answer.imag=complexNum.imag()+this.imag;
+    answer.real=complexNum.real()+this.real;
 
     return answer;
   }
 
-
 }
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