struct

问题 My current struct is: typedef char AirportCode[4]; typedef struct node{ AirportCode airport; struct node *next; }Node; My idea for how the function should start is this: Node *copy(Node *list) { int count = 0; while (list != NULL){ count++; list = list->next; } } Now we know how long the original list is, but the reason why I am so stumped is because I have no idea how to seperatly allocate the memory for each individual node that we have to copy to the second list. 回答1: You allocate a new

问题 Here is the code snippet from my LinqPad: public class Elephant{ public int Size; public Elephant() { Size = 1; } } public struct Ant{ public int Size; } private T[] Transform2AnotherType<T>(Elephant[] elephantList) where T:new() { dynamic tArray = new T[elephantList.Length]; for (int i = 0; i < elephantList.Length; i++) { tArray[i] = new T(); tArray[i].Size = 100; //tArray[i].Dump(); } return tArray; } void Main() { var elephantList = new Elephant[2]; var elephant1 = new Elephant(); var

问题 Here is the code snippet from my LinqPad: public class Elephant{ public int Size; public Elephant() { Size = 1; } } public struct Ant{ public int Size; } private T[] Transform2AnotherType<T>(Elephant[] elephantList) where T:new() { dynamic tArray = new T[elephantList.Length]; for (int i = 0; i < elephantList.Length; i++) { tArray[i] = new T(); tArray[i].Size = 100; //tArray[i].Dump(); } return tArray; } void Main() { var elephantList = new Elephant[2]; var elephant1 = new Elephant(); var

问题 I have two different structures and and two const look up tables as below typedef const struct { unsigned int num; unsigned char name[100]; unsigned int value1; unsigned int value2; unsigned int value3; }st_Table1; typedef const struct { unsigned int num; unsigned char name[100]; }st_Table2; st_Table1 stTable1[] = { { 1, "Name1", 12, 13, 14 }, { 2, "Name2", 22, 23, 24 }, { 3, "Name3", 32, 33, 34 }, { 4, "Name4", 42, 43, 44 } }; st_Table2 stTable2[] = { 1, "India1" }, { 2, "India2" }, { 3,

问题 as you could see in the title, I am working on a vector of structs. one of the struct members is string word . when i am trying to enter data to this member in this way: (*iv).word=temp_str; , i get a runtime error. while (is!=str1.end()) { if (((*is)!='-')&&((*is)!='.')&&((*is)!=',')&&((*is)!=';')&&((*is)!='?')&&((*is)!='!')&&((*is)!=':')) { temp_str.push_back(*is); ++is; } else { (*iv).word=temp_str; ++iv; str1.erase(is); temp_str.clear(); } } this may be the relevant code interval. should

问题 I have a struct that contains an array of strings (char arrays) and an int for the maximum capacity of the array. typedef struct ArrayList { char **array; int capacity; } The array is initialized with malloc in its own method. list->array = malloc(sizeof(char *) * templength); And the individual strings are initialized as list->array[nextEmptyString] = malloc(sizeof(str)); strcpy(list->array[nextEmptyString], str); I need to be able to clear everything about that array from memory and then

问题 typedef char string20[21]; struct x{ string20 a; string20 b; string20 c; }; How do I scan a text file and store their values on my structure? I can't think of an easy way on how to do this and btw I'm just learning I/O can't find any good tutorial on internet please help the file format is: 3 FCODE=random FKEY=shit FSRC=hi how do i store "random" in a and etc... I know I should use strcpy ofcourse 回答1: Use fgets function to a single line. eg: fgets(buf, MAX_LINE_SIZE, my_io); Use strchr or

问题 typedef char string20[21]; struct x{ string20 a; string20 b; string20 c; }; How do I scan a text file and store their values on my structure? I can't think of an easy way on how to do this and btw I'm just learning I/O can't find any good tutorial on internet please help the file format is: 3 FCODE=random FKEY=shit FSRC=hi how do i store "random" in a and etc... I know I should use strcpy ofcourse 回答1: Use fgets function to a single line. eg: fgets(buf, MAX_LINE_SIZE, my_io); Use strchr or

问题 I am just learning C (reading Sam's Teach Yourself C in 24 hours). I've gotten through pointers and memory allocation, but now I'm wondering about them inside a structure. I wrote the little program below to play around, but I'm not sure if it is OK or not. Compiled on a Linux system with gcc with the -Wall flag compiled with nothing amiss, but I'm not sure that is 100% trustworthy. Is it ok to change the allocation size of a pointer as I have done below or am I possibly stepping on adjacent

问题 I am attempting to create a type in C that can accept most primitive types. I am new to C and don't understand structs very well. My error occurs on line 10 (of main.c) and it will also occur on line 11 if line 10 is removed (also of main.c). If anyone has an ideas/pointers I would really appreciate it! Many thanks! main.c: #include <stdio.h> #include "modularType.h" int main() { int data = 1; PyType object = createPyObjectInt(data); printf("Type of data: %d\n", object->typeOfData); printf(