#include <stdbool.h>

//length 0 for null terminated strings;
bool strcmp(char *str1, char *str2, int length)
{
    int i=0;
    while(true)
    {
	if(str1[i]!=str2[i])return false;
	i++;

	if(i==length) return true;
	if(str1[i]==0||str2[i]==0)
	{
	    if(str1[i]==str2[i])return true;
	    return false;
	}
    }

}

void* memcpy(void* restrict dstptr, const void* restrict srcptr, int size)
{
	unsigned char* dst = (unsigned char*) dstptr;
	const unsigned char* src = (const unsigned char*) srcptr;
	for ( int i = 0; i < size; i++ )
		dst[i] = src[i];
	return dstptr;
}

int strlen(const char* string)
{
	int result = 0;
	while ( string[result] )
		result++;
	return result;
}