#include<stdio.h>
#include<string.h> // for strlen
#include<stdlib.h> // for malloc and free
#include<ctype.h>

// This is the same as strcpy which is in string.h

void make_copy(char* restrict dest, char* restrict src){
	int i;
	for(i = 0; src[i]; i++)
		dest[i] = src[i];
	dest[i] = 0;
}


int main(){
	int a = 26, b = 400, c = 631;
	int *pa = &a;
	/* *pa means pa[0]
	 * *(pa + 1) means pa[1]
	 */
	printf("a = %d\n", *pa);
	for(int i = 0; i < 10; i++)
		printf("pa[%d] = %d\n", i, pa[i]);

	char our_string[] = "ant gazelle snail slug goose";
	char *our_string2 = "ant gazelle snail slug goose";
	printf("Sizes:\nour_string:  %d\nour_string2:  %d\n", sizeof(our_string), sizeof(our_string2));

	for(int i = 0; i < strlen(our_string); i++)
		printf("%c", toupper(our_string[i]));
	printf("\n");

	for(int i = 0; i < strlen(our_string); i++)
		our_string[i] = toupper(our_string[i]);

	printf("our_string = %s\n", our_string);
	printf("our_string2 = %s\n", our_string2);

	make_copy(our_string, our_string + 4);
	printf("our_string = %s\n", our_string);
	strcpy(our_string + 8, our_string + 8 + 6);
	printf("our_string = %s\n", our_string);
	
	return 0;
}