strcat.c

一些linux基本函数的测试集,给像我一样的新手看看

//strcat(字符数组,字符串):把字符串追加到字符数组的末尾
//strlen(),strupr(),strlwr()
#include "string.h"
#include "stdio.h"

int main()
{
	char *str;
	char bst[30]={'c','a','n','t',' ','h','e','l','p',' ',};
	
	str="falling in love";
	
	printf("the string length is:%d\n",strlen(bst));
	strcat(bst,str);
	
	printf("the string length is:%d\n",strlen(bst));
	printf("%s\n",bst);
	strupr(bst);
	printf("%s\n",bst);
	strlwr(bst);
	printf("%s\n",bst);
	return 1;
}