C语言入门篇--字符串的基本理论及应用

#include <stdio.h>
int main()
{
	'A';//(1)
	"abc";//(2)
	"A";//(2)
	"";//(3)
	"1234";//(4)
	return 0;
}

#include <stdio.h>
int main()
{
	printf("%d\n", sizeof("abcd"));
	printf("%d\n", strlen("abcd"));
	return 0;
}

	char str[] = "a";//此字符串数组大小为2

#include <stdio.h>
int main()
{
	char str[] = { 'a', 'b', 'c'};
	printf("%s\n", str);
	return 0;
	
}

#include <stdio.h>
int main()
{
	char str[] = { 'a', 'b', 'c','\0' };
	printf("%s\n", str);
	return 0;
}

#include <stdio.h>
int main()
{
	char str[] = { 'a', 'b','\0', 'c' };
	printf("%s\n", str);
	return 0;
}

#include <stdio.h>
int main()
{
	char *s = "abc";
	printf("%s\n", s);	
	return 0;
}

#include <stdio.h>
int main()
{
	printf("abc\n");
	return 0;
}