#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

int main(void) {
	char a[100];
	char b[100] = "hogehogehogehogehogehoge";
	char c[100] = "mogemogemogemogemogemoge";
	int i = 0;
	size_t sa, sb;
	long start, end;

	//strcpy+strcat
	start = clock();
	for (i = 0; i < 1000000; i++) {
		strcpy(a, b);
		strcat(a, c);
	}
	end = clock();
	printf("strcpy+sarcat %ldƒ~ƒŠ•b\n", end - start);

	//memcpy
	start = clock();
	for (i = 0; i < 1000000; i++) {
		sa = strlen(a);
		sb = strlen(b);
		memcpy(a, b, sa);
		memcpy(a + sa, c, sb + 1);
	}
	end = clock();
	printf("memcpy %ldƒ~ƒŠ•b\n", end - start);

	// sprintf
	start = clock();
	for (i = 0; i < 1000000; i++) {
		sprintf(a, "%s%s", b, c);
	}
	end = clock();
	printf("sprintf %ldƒ~ƒŠ•b\n", end - start);

	puts(a);
	return EXIT_SUCCESS;
}