char str1[] = "abc"; char str2[] = "abc"; const char str3[] = "abc"; const char str4[] = "abc"; const char *str5 = "abc"; const char *str6 = "abc"; char *str7 = "abc"; char *str8 = "abc"; cout << ( str1 == str2 ) << endl; cout << ( str3 ...
const char str3[] = “abc”; const char str4[] = “abc”; const char* str5 = “abc”; const char* str6 = “abc”; cout << boolalpha << ( str1==str2 ) << endl; // 输出什么? cout << boolalpha << ( str3==str4 ) << endl; // 输出什么?
char str1[]="abc"; //分配空间在栈; char *str2="abc"; //本质是const char *str2="abc";静态区 *str2='k'; //编译成功,运行失败 // str3与str4不相等 const char str3[]="abc"; //分配空间在栈;数组名不能作为左值 const char *str4="abc"; //静态区 }...
06const char *、char const *、char *const三者之间的区别 constint abc =12;//abc是常量不能改变abc的值char*p 和const混用charstr[] ="q-wertyuiop";char* p; p =str; *p ='Y';//*p除非在定义中,否则就代表p所指向的内存地址。(*p在=的左边)p++;//Y-wertyuiop,p指向了-wertyuiop(1)constchar...
const char* c_s = "abc"; string s(c_s); 3. string转char* 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 string s = "abc"; char* c; const int len = s.length(); c = new char[len+1]; strcpy(c,s.c_str()); 4. char*转string 代码语言:javascript 代码运行次...
1以下三条输出语句分别输出什么?char str1[] = "abc";char str2[] = "abc";const char str3[] = "abc";const char str4[] = "abc";const char* str5 = "abc";const char* str6 = "abc";cout 2以下三条输出语句分别输出什么?[基础]char str1[] = "abc";char str2[] = "abc";...
答: char*constp;//常量指针,p的值不可以修改 charconst*p;//指向常量的指针,指向的常量值不可以改 constchar*p;//和charconst*p 3. charstr1[]="abc"; charstr2[]="abc"; constcharstr3[]="abc"; constcharstr4[]="abc"; constchar*str5="abc"; constchar*str6="abc"; char*str7="abc"...
3、双引号括起来的字符串是属于const的。 4、使用char[]前随手memset,不要因为它是局部的。刚刚又因为没有memset把我们客户端人员坑惨了,可能是局部变量占用空间过大,没来得及释放,将上次调用的内容留下了。 5、将char*变量作为参数传入函数,不用传出来了。
2. const char*转string 直接赋值即可 const char* c_s = "abc"; string s(c_s); 3. string转char* string s = "abc"; char* c; const int len = s.length(); c = new char[len+1]; strcpy(c,s.c_str()); 4. char*转string ...
const char str4[] = "abc"; const char* str5 = "abc"; const char* str6 = "abc"; cout << boolalpha << (str3 == str4) << endl; cout << boolalpha << (str5 == str6) << endl; 返回false true str3, str4两个字符数组都存在栈空间,但两者地址值并不相等.而str5和str6并非字符...