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homework7

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+Caleb Gershengorn
+
+1:
+++*p:advances the pointer one space in the array in memory, than checks what is in that spot.
+*p++: checks the space in memory at that spot, then advances one space.
+*++p" does the same as the first, because the placement of the '++' makes the difference, not the '*'
+
+2:
+Left to right garuntees operator precedence.
+
+3:
+Using pointers allows you to more easily look through lists and access things in memory than having to reference them directly.
+
+4:
+int *p=12
+*p=2
+char
+
+4.1--valid
+4.2--invalid(dash is not a thing)
+4.3--valid(just false)
+4.4--valid(dereference operator)
+4.5--valid(stores a value at a[0])
+4.6--valid(dereference operator)
+4.7--valid(stores value at p)
+4.8--invalid
+4.9--invalid(main is a special use function)
+4.10--valid
+
+

swap2.c

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+#include <stdio.h>
+#include <string.h>
+
+void swap(char*word,int sizeWord){
+	int i;
+	int j;
+	char * wordPtr=word;
+	if (sizeWord%2==0)
+	{
+	for (i=0;i<sizeWord/2;i++)
+	{
+	char tmp = wordPtr[i];
+	wordPtr[i] = wordPtr[sizeWord-i];
+	wordPtr[sizeWord-i] =  tmp;
+	}
+	}
+	else 
+	{
+	for (i=0;i<(sizeWord-1)/2;i++)
+	{
+	char tmp = wordPtr[i];
+	wordPtr[i] = wordPtr[sizeWord-i];
+	wordPtr[sizeWord-i]=tmp;
+	}
+	}
+	for (j=0;j<sizeWord;j++)
+        {
+        printf("%c\n",wordPtr[j]);
+        }
+}
+
+int main(){
+	char* arr1;
+	printf("Enter the word you want to flip: \n");
+	fgets(arr1,sizeof(arr1),stdin);
+	swap(arr1,sizeof(arr1));
+}
+