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4/ex3.c

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+#include <stdio.h>
+
+#define THREE 3
+//---------------------------------------------------------------------------------------
+//                                              Exercise 3
+//                                              ----------
+//
+// General : The program prints the smallest power of 3 larger than the input.
+//
+// Input   : Number.
+//
+// Process : The program check all power of 3 until that is smaller than input.
+//
+// Output  : Number.
+//
+//---------------------------------------------------------------------------------------
+// Programmer : Cohen Idan
+// Student No : None
+// Date       : 23.09.2019
+//---------------------------------------------------------------------------------------
+void main(void)
+{
+    unsigned short num;
+    unsigned int result;
+
+    printf("Enter number: ");
+    scanf("%hd", &num);
+    for (result = THREE; num > result; result *= THREE);
+
+    printf("%d\n", result);
+    
+}