all done

TestAssessment/TestViewController.m

@@ -19,39 +19,48 @@ @implementation TestViewController
     This method should return any negative NSInteger
     (hint: cannot be 0)
  */
-- (void)shouldReturnANegativeNSInteger {
+- (NSInteger)shouldReturnANegativeNSInteger {
+    NSInteger rt = -1;
+    return rt;
 
 }
 
 /*
     This method should return any positive CGFloat
     (hint: cannot be 0)
  */
-- (void)shouldReturnAPositiveCGFloat {
-
+- (CGFloat)shouldReturnAPositiveCGFloat {
+    CGFloat flt = 1.009;
+    return flt;
 }
 
 /*
     This method should return a truthy boolean
     Truthy: Something which evaluates to TRUE.
  */
-- (void)shouldReturnAPositiveBool {
-
+- (BOOL)shouldReturnAPositiveBool {
+    return YES;
 }
 
 /*
     This method should return any single char from c - l
  */
-- (void)shouldReturnACharCtoL {
-
+- (char)shouldReturnACharCtoL {
+    return 'j';
 }
 
 /*
     This method should return the product of all numbers from
     0 - 1000 using a loop (eg. 1 + 2 + 3 + ... + 998 + 999)
  */
 - (NSInteger)shouldReturnSumOf0To1000 {
-    return 0;
+    NSInteger i =0;
+    NSInteger sum = 0;
+    while (i<1000){
+        sum+=i;
+    }
+    return sum;
+    //or Gaussian sum n*(n+1)/2
 }
 
 /*
@@ -60,7 +69,13 @@ Given a c array (int[]) and a count, return the average of the numbers within th
  */
 - (NSInteger)shouldReturnAverageOfArrayValues :(int *)arr
                                  withSize:(int)count {
-    return 0;
+    int sum=0;
+    for( int i =0; i<count; i++){
+        sum+=arr[i];
+    }
+
+
+    return sum/count;
 }
 
 /*
@@ -70,6 +85,13 @@ Provided a C string (array of chars), return the character
     (hint: assume there will be a char after g)
  */
 - (char)shouldReturnCharAfterG:(char *)str {
+    int i =0;
+    while(i< strlen(str)-1){
+        if(str[i]=='g'){
+            return str[i+1];
+        }
+        i++;
+    }
     return '\0';
 }
 
@@ -79,52 +101,69 @@ - (char)shouldReturnCharAfterG:(char *)str {
  */
 - (NSInteger)productOfAnInteger:(NSInteger)aNumber
               andAnotherInteger:(NSInteger)bNumber {
-    return 0.0;
+    return aNumber*bNumber;
 }
 
 
 /*
     This method should return a YES if aNumber is Even
  */
 - (BOOL)isEven:(NSInteger)aNumber {
+    if(aNumber%2==0){
+        return YES;
+    }
+
     return NO;
+
 }
 
 /*
     This method should return YES if aNumber is a multiple of 10
  */
 - (BOOL)isMultipleOfTen:(NSInteger)aNumber {
+    if(aNumber%10==0){
+        return YES;
+    }
+
     return NO;
+
 }
 
 /*
     This method should return YES is aNumber is odd and bNumber is even
  */
 - (BOOL)returnYesIfThisNumberIsOdd:(NSInteger)aNumber
                andThisNumberIsEven:(NSInteger)bNumber {
+    if(aNumber%2==1 && bNumber%2==0){
+        return YES;
+    }
+
     return NO;
+
 }
 
 /*
     This method should return the model of the Car
     (hint: command + click on the class name to see what methods are available)
  */
 - (NSString *)shouldReturnCarModel:(Car *)car {
-    return @"";
+    return [car model];
 }
 
 /*
     This method should change the model of the car to "Firebird"
  */
 - (void)changeCarModelToFirebird:(Car *)car {
+    [car setModel:@"Firebird"];
 }
 
 /*
     This method should ask the car to drive 4 miles and then return
     the car's current fuel level
  */
 - (CGFloat)tellCarToDrive4MilesAndReturnFuelLevel:(Car *)car {
-    return 0.0;
+    [car drive:4];
+    return [car fuelLevel];
 }
 
 /*
@@ -135,11 +174,22 @@ - (CGFloat)tellCarToDrive4MilesAndReturnFuelLevel:(Car *)car {
     4) Return the car
  */
 - (Car *)createAndReturnANewCar {
-    return [[Car alloc] init];
+    Car *c= [[Car alloc] init];
+    [c setModel:@"Honda Pilot"];
+    [c drive:6];
+
+    return  c;
 }
 
 - (int)returnSumOfAllItemsGreaterThan100:(int *)arr withSize:(int)size {
-    return 0;
+    int sum = 0;
+    for(int i = 0; i<size; i++){
+        if (100<arr[i]){
+            sum+=arr[i];
+        }
+    }
+
+    return sum;
 }
 
 @end