#include<stdio.h> int main()
{
char cdata[]={'h','e','l','l','o'};
char cdata2[]="hello";
int len=sizeof(cdata)/sizeof(cdata[0]);
printf("cdata长度=%d\n",len);//长度为5
len=sizeof(cdata2)/sizeof(cdata2[0]);
printf("cdata2长度=%d\n",len);//长度为6,字符串会自动的加一个'\0'结束标志,所以长度为6
return 0;
}
输出结果:
cdata长度=5
cdata2长度=6