emma Homework

assignment7.txt

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+
+
+1. ++*p increments what the pointer points to whereas the *p++ actually increases the value of the pointer. *++p is also increases what the pointer points to.
+
+
+2. Oh the left is guaanteed because its higher in the order of operations.
+
+
+3. pointers allow easier use with arrays. You can go through the pointer without the for loop and it allows easier access outside of the main function. 
+
+
+4.1 char array 
+4.2 Invalid becaus xyz in quotes is not an arry
+4.3 Invalid becuse that will never be true
+4.4 pointer
+4.5 address is 0
+4.6 pointer
+4.7 adress is 0 becuase we haven't moved it anywhere only increased the value at a point
+4.8 A pointer
+4.9 Invalid, you can access main like that because it isn't a pointer
+4.10 5
+I don't want to edit this now that we're going over it, but I just didn't understand what the questions were asking....

point.c

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+#include <stdio.h>
+#include <string.h>
+
+char cat(char *a, char *b){
+	char *point = a;
+
+	while(*point != '\0'){
+	point++;
+
+	}
+
+	while(*b != '\0'){
+		*point = *b;
+		point++;
+		b++;
+
+	}
+
+
+}
+
+char compare(char *c, char *d){
+ 	char string1[10];
+	char string2[10];
+
+	*c = string1[10];
+	*d = string2[10];
+
+	int i, len1, len2;
+
+	len1 = strlen(string1);
+
+	len2 = strlen(string2);
+
+	for(i=0; len1<=len2; i++){
+
+		if(string1[i] == string2[i]){
+
+			printf("0");
+			i++;
+		}
+
+		else{
+			printf("1");
+			break;
+
+		}
+
+
+	}
+}
+
+
+int main(){
+	char a[] = "Emma";
+	char b[] = "Ladouceur";
+	cat(a, b);
+	printf("%s\n", a);
+	char c[]="Emma";
+	char d[]="Emma";
+
+	compare(c,d);	
+	return 0;
+
+}

reverse.c

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+//Emma Ladouceur
+
+
+#include <stdio.h>
+#include <string.h>
+
+
+int reverse(char arr[]){
+
+
+	char *ptrStart = arr;
+
+	char *ptrEnd = ptrStart + strlen(arr)-1;
+
+	int i;
+		for(i=0; *ptrStart != *ptrEnd; i++){
+			printf("%c", *ptrEnd);
+			--ptrEnd;
+
+		}
+
+}
+int main(){
+	printf("Enter a string of no more than 100 letters\n");
+	char string[100];
+	fgets(string, sizeof(string), stdin);
+	reverse(string);
+
+
+
+return 0;
+
+
+
+}