Initial data commit

Task/Trabb-Pardo-Knuth-algorithm/Objective-C/trabb-pardo-knuth-algorithm.m

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+//
+//  TPKA.m
+//  RosettaCode
+//
+//  Created by Alexander Alvonellos on 5/26/12.
+//  Trabb Pardo-Knuth algorithm
+//
+
+#import <Foundation/Foundation.h>
+double f(double x);
+
+double f(double x) {
+    return pow(abs(x), 0.5) + 5*(pow(x, 3));
+}
+
+int main (int argc, const char * argv[])
+{
+    @autoreleasepool {
+        NSMutableArray *input = [[NSMutableArray alloc] initWithCapacity:0];
+
+        printf("%s", "Instructions: please enter 11 numbers.\n");
+        for(int i = 0; i < 11; i++) {
+            double userInput = 0.0;
+            printf("%s", "Please enter a number: ");
+            scanf("%lf", &userInput);
+            [input addObject: @(userInput)];
+        }
+
+        for(int i = 10; i >= 0; i--) {
+            double x = [input[i] doubleValue];
+            double y = f(x);
+            printf("f(%.2f) \t=\t", x);
+            if(y < 400.0) {
+                printf("%.2f\n", y);
+            } else {
+                printf("%s\n", "TOO LARGE");
+            }
+        }
+    }
+    return 0;
+}