strcmp–memset

#define _CRT_SECURE_NO_WARNINGS 1
#include 
#include 
int mai服务器托管网n()
{
	char arr1[] = "xyd";
	char arr2[]服务器托管网 = "***************";
	strcpy(arr2, arr1);//将arr1里的元素拷贝到arr2里
	printf("%sn", arr2);//实际上把xyd四个字符都放进去了,打印结果直接为xyd
	return 0;
}

#define _CRT_SECURE_NO_WARNINGS 1
#include 
#include 
int main()
{
	char arr[] = "hello hello";
	memset(arr,'x',5);//把arr数组里前五个元素替换成x
	printf("%sn",arr);
	return 0;
}