func(char *str){printf(” %d”,sizeof(str));printf(” %d”,strlen(str));}main(){char a[]=”123456789″;printf(” %d”,sizeof(a));printf(” %d... [strlen]
int strlen(const char *str){assert(str != NULL);int len = 0;while((*str++) != ‘\\0′)len++;return len;}第二种方法:int strlen(const char *str)... [strlen]