pointer - Related information

  • C language function returns pointer result exception

    problem description all the great gods, I went straight to the code. As follows: -sharpinclude <stdio.h> int *get() { int a = 1; int *p = &a; return p; } int main() { int *pptr; pptr = get(); int *ptr = get(); ...

    Mar.17,2022
  • C language function returns pointer result exception

    problem description all the great gods, I went straight to the code. As follows: -sharpinclude <stdio.h> int *get() { int a = 1; int *p = &a; return p; } int main() { int *pptr; pptr = get(); int *ptr = get(); ...

    Mar.17,2022
  • C language function returns pointer result exception

    problem description all the great gods, I went straight to the code. As follows: -sharpinclude <stdio.h> int *get() { int a = 1; int *p = &a; return p; } int main() { int *pptr; pptr = get(); int *ptr = get(); ...

    Mar.17,2022
  • C language function returns pointer result exception

    problem description all the great gods, I went straight to the code. As follows: -sharpinclude <stdio.h> int *get() { int a = 1; int *p = &a; return p; } int main() { int *pptr; pptr = get(); int *ptr = get(); ...

    Mar.17,2022
  • Can C language access one-dimensional array in the form of two-dimensional array

    char p1[12] = {1,2,3,4,5,6}; char (*p2)[3]; p2 = &p1; this is possible, but gcc compiles with a warning: warning: assignment from incompatible pointer type [- Wincompatible-pointer-types] ...

    Mar.03,2022
  • The problem of Protobuf generating go pointer

    the proto file I now define is as follows syntax = "proto2"; message Test1 {} message Test2 { required Test1 test1 = 1; } message Test3 { required Test2 test2 = 1; } then I will get a go file with the approximate content type Test...

    Jan.11,2022
  • A question about the pointer of this place

    I feel that pointers are not needed at all in this place. Why do I see many related examples using pointers? There is some doubt package main import ( "fmt" "net http" ) type MyMux struct { } func (p *MyMux) ServeHTTP(w...

    Apr.01,2021
  • Questions about array pointers in go language

    when learning go pointers, we think that the pointer variable stores the value of the memory address, and the * operator can get the stored value of the memory . then when you join the pointer to the array ( array pointer ), you find that you can manip...

    Apr.01,2021
  • Problems with pointers encountered in chapter 6.12 of "C and pointers"

    this section gives an example for pointers: look for the existence of a character in a data structure. the following is what I wrote routinely: -sharpinclude <stdio.h> -sharpdefine TRUE 1 -sharpdefine FALSE 0 int find_str(char **, char); int f...

    Mar.29,2021
  • The problem of byte alignment?

    < H1 > Code < H1 > -sharpinclude <stdio.h> struct test{ int i; short c; char *p; }; int main(void) { struct test *pt = NULL; printf("%p n", &(pt->i)); printf("%p n", &(pt->c)); prin...

    Mar.23,2021
  • Why does control block in shared_ptr maintain weak reference counter??

    ref: StackOverflow s question address The answer explained that weak reference counters have an impact on the life cycle of control block. I understand that new is different from make_shared, but I don t understand why control block needs to maint...

    Mar.15,2021
  • MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
    MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3230f-2bdea.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
    MySQL Errno : 1021
    Message : Disk full (/tmp/#sql-temptable-64f5-1b3230f-2bdea.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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