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6/ex1.c

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+#include <stdio.h>
+
+#define N       5
+#define S       5
+#define BOOLEAN unsigned short
+#define TRUE    1
+#define FALSE   0
+#define ZERO    0
+#define ONE     1
+
+//---------------------------------------------------------------------------------------
+//                                              SumInArray
+//                                              ----------
+//
+// General      : Checks if there are two numbers whose sum is equal to 
+//                the number entered as "sum".
+//
+// Parameters   :  
+//          array[] - array (int)
+//          size    - array size (unsigned int)
+//          sum     - The amount required (int)
+//
+// Return value : Counter (int).
+//
+//---------------------------------------------------------------------------------------
+// Programmer : Cohen Idan
+// Student No : 211675038
+// Date       : 21.10.2019
+//---------------------------------------------------------------------------------------
+BOOLEAN SumInArray(int array[], unsigned int size, double sum)
+{
+    BOOLEAN answer = FALSE;
+    unsigned int temp_size = size,
+                    count;
+    double temp_sum;
+
+    for (count = ZERO; count < temp_size && !answer;)
+    {
+        temp_sum = array[count] + array[temp_size];
+        answer = (temp_sum == sum) ? TRUE : FALSE;
+        count += (temp_sum < sum) ? ONE : ZERO;
+        temp_size -= (temp_sum > sum) ? ONE : ZERO;
+    }
+    
+    return (answer);
+}
+
+
+//---------------------------------------------------------------------------------------
+//                                              Exercise 1
+//                                              ----------
+//
+// General : The program checks whether the required sum of two numbers
+//           is in an ordered array.
+//
+// Input   : None.
+//
+// Process : Uses a function called "SumInArray".
+//
+// Output  : If the required sum of two numbers is found in an ordered array (BOOLEAN).
+//
+//---------------------------------------------------------------------------------------
+// Programmer : Cohen Idan
+// Student No : 211675038
+// Date       : 23.10.2019
+//---------------------------------------------------------------------------------------
+void main(void)
+{
+    int sort_numbers[N] = {1,2,3,4,5};
+    BOOLEAN answer = FALSE;
+    answer = SumInArray(sort_numbers, N, S);
+    
+    printf("Answer: %hu\n", answer);
+}