如何初始化嵌套數組

Question

初始化以下2級嵌套數組的正確語法是什麼？

z3 srC# cat tc.c 
#include <stdio.h> 

typedef struct level1_t { 
     char       var[15]; 
     int       value; 
} level1_t; 

typedef struct level2_t { 
    level1_t  data[3]; 
} level2_t; 

level2_t level2[1] = { 
       [0]={ 
         [0]={"one",1}, 
         [1]={"two",2}, 
         [2]={"three",3} 
       } 
}; 

int main() { 

     printf("%s\n",level2[0].data[1].var); 
} 
z3 srC# gcc -ggdb -o tc tc.c 
tc.c:14:4: error: array index in non-array initializer 
tc.c:14:4: error: (near initialization for 'level2[0]') 
tc.c:15:4: error: array index in non-array initializer 
tc.c:15:4: error: (near initialization for 'level2[0]') 
tc.c:15:4: error: extra brace group at end of initializer 
tc.c:15:4: error: (near initialization for 'level2[0]') 
tc.c:15:4: warning: excess elements in struct initializer 
tc.c:15:4: warning: (near initialization for 'level2[0]') 
tc.c:16:4: error: array index in non-array initializer 
tc.c:16:4: error: (near initialization for 'level2[0]') 
tc.c:16:4: error: extra brace group at end of initializer 
tc.c:16:4: error: (near initialization for 'level2[0]') 
tc.c:16:4: warning: excess elements in struct initializer 
tc.c:16:4: warning: (near initialization for 'level2[0]') 
z3 srC# 

Answer 1

變化

level2_t level2[1] = { 
       [0]={ 
         [0]={"one",1}, 
         [1]={"two",2}, 
         [2]={"three",3} 
       } 
}; 

到

level2_t level2[1] = { 
       [0].data = { 
         [0]={"one",1}, 
         [1]={"two",2}, 
         [2]={"three",3} 
       } 
}; 

現在你要初始化結構數組，而你需要初始化data領域。

正如你在評論中問道，這裏是如何做同樣的事情沒有索引：

level2_t level2[] = { 
    { 
     .data = { 
      {"one", 1}, 
      {"two", 2}, 
      {"three", 3} 
     } 
    } 
}; 

Answer 2

level2_t level2 = 
{ 
    {"one, 1}, 
    {"two, 2}, 
    {"three", 3} 
};