結構類型數組初始化

Question

我有結構和我有這樣的結構化類型的陣列，我試圖使用用於初始化數組元素但字符串數組是相同

#include "stdafx.h" 
#include "string.h" 

#define NUMBER_OF_STARS   200 
#define NUMBER_OF_PLANETS  200 

//== STAR STRUCTURE ==// 
// NAME | DIAMTER | TEMPERATURE | COMPANION PLANET/S // 
//== END STRUCTURE ==// 
typedef struct _star 
{ 
    char *name; 
    int diameter; 
    int temperature; 

}star; 
//== STAR STRUCTURE ==// 
// NAME | DISTANCE TO STAR | TWIRLING STAR | SPEED IN SPACE // 
//== END STRUCTURE ==// 
typedef struct _planet 
{ 
    char *name; 
    int distance_to_star; 
    char *twirling_star; 
    int speed_in_space; 
}planet; 
typedef struct _galaxy 
{ 
    star s_star; 
    planet s_planet; 
}galaxy; 

int main() 
{ 
    star s_star[NUMBER_OF_STARS]; 
    printf("Create your STARS\n"); 
    for (int i = 0; i < 200; ++i) 
    { 
     printf("Enter name of STAR\n"); 
     char s_name[20]; 
     scanf_s(" %s", s_name, 20); 
     printf("Enter diameter of STAR\n"); 
     int s_diameter; 
     scanf_s(" %i", &s_diameter); 
     printf("Enter temperature of STAR\n"); 
     int s_temperature; 
     scanf_s("%i", &s_temperature); 
     char s_com_planet[20]; 
     printf("\n"); 
     s_star[i] = { s_name,s_diameter,s_temperature }; 
     printf("Would you want to create another one?(YES/NO)\n"); 
     char cmd_answer[5]; 
     scanf_s("%s", cmd_answer, 5); 
     if (strstr(cmd_answer, "YES")) continue; 
     else if(strstr(cmd_answer, "NO")) break; 
     else break; 
     //printf("Name of STAR:\t\t%s\nDiameter of STAR:\t%i\nTemperature of STAR:\t%i\n\n", s_star->name, s_star->diameter, s_star->temperature); 
    } 

    printf("%s", s_star[1].name); 

    for (;;); 
    return 0; 
} 

並且當我進入例如：

name1 
1 
1 

不是再次

name2 
2 
2 

然後再

name3 
3 
3 

Visual Studio中顯示，s_star陣列s_star[0].names_star[1].names_star[2].name的是在我的情況下輸出同樣是name3 誰能弄清楚這一點，並解釋我，我在做什麼錯。

Answer 1

star包含指針。您可以將數組初始化爲0，如下所示：

star s_star[NUMBER_OF_STARS] = { 0 }; 

如果star不包含指針，你可以聲明中初始化：

star s = { 0,123,456 }; 
//or 
star array[] = { {1,2,3}, {4,5,6} }; 

但在這種情況下，你必須手動設置成員：

//(in this case is not necessary to check the previous value) 
if (s_star[i].name) 
    free(s_star[i].name); 

s_star[i].name = malloc(strlen(s_name) + 1); 
strcpy_s(s_star[i].name, (strlen(s_name) + 1), s_name); 

s_star[i].diameter = s_diameter; 
s_star[i].temperature = s_temperature; 

與您的問題沒有關係，但在Visual Studio中使用system("pause")而不是for(;;);以調試模式暫停程序。