Assignment 7 Bettina Benitez

assignment7.txt

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+Bettina Benitez
+
+1. ++*p reads right to left. Therefore, it increments point p.  Same with *++p, the order of operation is right to left. But point p is incremented then the dereferenced. *p++ is read left to right therefore it is incremented then dereferenced. 
+
+2. No the order of precedence is not guaranteed
+
+3. advantages:
+- it points to a specific lovation in memory
+- provides direct access to memory
+- reduces storage and complexity
+
+4
+ - 4.1: *char
+ - 4.2: invalid
+ - 4.3: invalid 
+ - 4.4: *int pointer to the array
+ - 4.5: *char reference to the array
+ - 4.6: *int
+ - 4.7: reference to the pointer
+ - 4.8: incrementing the char argv
+ - 4.9: reference to main
+ - 4.10: part of the fgets fucntion to get the string.
+
+

reverse.c

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+//Bettina Benitez
+#include <stdio.h>
+#include <string.h>
+
+void getReverse (char *x) {
+	int i;
+	int length = strlen(x); //gets the length of the string
+	char *first = x; //points to the first character of the string
+	char *last = x + length - 1; //points to the last character (not \0) of the string
+	char temp; // temp is used as a place holder when switching letters
+	for (i = 0; i < length/2; i++) { //length is divided by 2 because it only needs to go half way to swap
+		temp = *first;
+		*first = *last;
+		*last = temp;
+		*first ++; 
+		*last--;
+	}
+	printf("%s", x);
+}
+
+int main () {
+	printf("Enter a word: ");
+	char word [100];
+	fgets(word, sizeof(word), stdin);
+	getReverse (word);
+}

strpoint.c

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+//Bettina Benitez
+#include <stdio.h>
+#include <string.h>
+
+void strCat (char *a, char *b) {
+	char *p = a;
+	while (*p != '\0') {
+		p++;
+	}
+	strcat(a, b);
+	*p--;
+	*p = ' ';
+	printf("%s", a);
+}
+
+void strCmp(char *a, char *b) {
+	if (strcmp(a, b) == 0)
+		printf("Words are the same\n");
+	else
+		printf("Words are the same\n");
+}
+
+int main () {
+	char aUserIn[100], bUserIn[100], strOpt[100];
+	printf("Enter first word: ");
+	fgets(aUserIn, sizeof(aUserIn), stdin);
+	printf("Enter second  word: ");
+	fgets(bUserIn, sizeof(bUserIn), stdin);
+	printf("Choose to concatenate or compare: ");
+	fgets(strOpt, sizeof(strOpt), stdin);
+	char con[100] = "concatenate\n";
+	char com[100] = "compare\n";
+	if (strcmp(strOpt, con) == 0)
+		strCat (aUserIn, bUserIn);
+	else if (strcmp(strOpt, com) == 0)
+		strCmp(aUserIn, bUserIn);
+	else
+		printf("Error: %s is not an option\n", strOpt);
+	return 0;
+}