added ConGram logic

src/main/c/ConvertMode.c

@@ -78,8 +78,6 @@ double getValue(int choice) {
             printf("\nThe convertet result is %dlf %d", result, Distance[endingUnit]);
             break;
 
-        }
-        
         case 4://'mg', 'g', 'kg', 't' 
             printf("\nEnter what the Unit is starting with (0 mg, 1 g, 2 kg , 3 t): ");
             scanf("%d", &startingUnit);
@@ -87,13 +85,14 @@ double getValue(int choice) {
             printf("\nEnter what the value should it be changed to (0 mg, 1 g, 2 kg , 3 t): ");
             scanf("%d", &endingUnit);
 
-            result = ConKilometerToMiles(value, startingUnit, endingUnit);
+            result = ConGram(value, startingUnit, endingUnit);
 
             printf("\nThe convertet result is %dlf %d", result, Distance[endingUnit]);
             break;
 
         }
     }
+    
 }
 
 double ConMeter(double meter, int startingUnit, int endingUnit) {
@@ -272,8 +271,104 @@ double ConKilometerToMiles(double distance, int startingUnit, int endingUnit) {
     }
 }
 
-double ConGram() {
+double ConGram(double weight, int startingUnit, int endingUnit) {
+    switch (startingUnit)
+    {//'mg', 'g', 'kg', 't' 
+    case 0: //mg to x
+        switch (endingUnit)
+        {
+        case 0: //1
+            return weight;
+            break;
+
+        case 1: //0.001
+            return weight / 1000;
+            break;
+
+        case 2: //0.000001
+            return weight / 1000000;
+            break;
+
+        case 3: //0.000000001
+            return weight / 1000000000;
+            break;
+
+        default:
+            break;
+        }
+
+    case 1: //g to x
+        switch (endingUnit)
+        {
+        case 0: //1000
+            return weight * 1000;
+            break;
+
+        case 1: //1
+            return weight;
+            break;
+
+        case 2: //0.01
+            return weight / 100;
+            break;
+
+        case 3: //0.000001
+            return weight / 100000;
+            break;
+
+        default:
+            break;
+        }
+
+    case 2: //kg to x
+        switch (endingUnit)
+        {
+        case 0: //1000
+            return weight * 1000;
+            break;
+
+        case 1: //100
+            return weight * 100;
+            break;
+
+        case 2: //1
+            return weight;
+            break;
+
+        case 3: //0.001
+            return weight / 1000;
+            break;
+
+        default:
+            break;
+        }
 
+    case 3://t to x
+        switch (endingUnit)
+        {
+        case 0: // 1000000000
+            return weight * 1000000;
+            break;
+
+        case 1: // 1000000
+            return weight * 100000;
+            break;
+
+        case 2: // 1000
+            return weight * 1000;
+            break;
+
+        case 3: //1
+            return weight;
+            break;
+
+        default:
+            break;
+        }
+
+    default:
+        break;
+    }
 }
 
 double ConTemp() {