在C中转换向量的C ++实现

我在C ++中编写了以下代码，但是发现我必须在C中转换它。我不是C甚至是C ++程序员，请帮忙。

有人可以帮助我将此方法更改为C指令，特别是向量实现，以下将无法编译我已删除复杂性以保持简单。 谢谢你的期待。

__declspec(dllexport) std::vector WINAPI ABC(char *strVal) { MY_STRUCT f; std::vector list = std::vector(); while (*dddd) { /*do the following for every feature in license file*/ f.attrib_num = fi.attrib_num; f.attrib_lic = fi.attrib_lic; list.push_back(f); } /* end while(conf) */ dddd++; printf("\n"); } /* end while (*dddd) */ return flist; } 

Answer 1

这是C中动态结构数组的实现（也是用法）。您可以将它调整到您的结构中; 我曾经在代码审查上发布它

 #include  #include  #include  typedef struct { int ID; char * name; } Student; // array of structs typedef struct { Student *array; size_t used; size_t size; } Array; void initArray(Array *a, size_t initialSize) { int i = 0; // Allocate initial space a->array = malloc(initialSize * sizeof(Student)); a->used = 0; // no elements used a->size = initialSize; // available nr of elements // Initialize all values of the array to 0 for(i = 0; iarray[i],0,sizeof(Student)); } } // Add element to array void addElement(Array *a, Student element) { int i = 0; if (a->used == a->size) { a->size *= 2; a->array = realloc(a->array, a->size * sizeof(Student)); // Initialize the last/new elements of the reallocated array for(i = a->used; isize; i++) { memset(&a->array[i],0,sizeof(Student)); } } // Copy name a->array[a->used].name = (char*)malloc(strlen(element.name) + 1); strcpy(a->array[a->used].name, element.name); // Copy ID a->array[a->used].ID=element.ID; a->used++; } void freeArray(Array *a) { int i = 0; // Free all name variables of each array element first for(i=0; iused; i++) { free(a->array[i].name); a->array[i].name=NULL; } // Now free the array free(a->array); a->array = NULL; a->used = 0; a->size = 0; } int main(int argc, const char * argv[]) { Array a; Student x,y,z; x.ID = 20; x.name=malloc(strlen("stud1") + 1); strcpy(x.name,"stud1"); y.ID = 30; y.name=malloc(strlen("student2") + 1); strcpy(y.name,"student2"); z.ID = 40; z.name=malloc(strlen("student3") + 1); strcpy(z.name,"student3"); // Init array, don't forget initArray(&a, 5); // Add elements addElement(&a, x); addElement(&a, y); addElement(&a, z); // Print elements printf("%d\n", a.array[0].ID); printf("%s\n", a.array[0].name); printf("%d\n", a.array[1].ID); printf("%s\n", a.array[1].name); printf("%d\n", a.array[2].ID); printf("%s\n", a.array[2].name); // Free array // don't forget freeArray(&a); free(x.name); free(y.name); free(z.name); return 0; }