如何初始化3维数组

问题描述

我正在尝试初始化3-d数组，但是由于某种原因，在进行编译时，它会给我很多警告

I am trying to initialize a 3-d array but for some reason when I compile, it is giving me a lot of warnings

double array[5][4][1]=
{
  {
    {1,2,3,4},
    {5,6,7,8},
    {9,10,11,12},
    {13,14,15,16},
    {17,18,19,20}
  }
};

给出的警告:

sales.c: In function `main':
sales.c:28: warning: excess elements in array initializer
sales.c:28: warning: (near initialization for `array[0][0]')
sales.c:28: warning: excess elements in array initializer
sales.c:28: warning: (near initialization for `array[0][0]')
sales.c:28: warning: excess elements in array initializer
sales.c:28: warning: (near initialization for `array[0][0]')
sales.c:29: warning: excess elements in array initializer
sales.c:29: warning: (near initialization for `array[0][1]')
sales.c:29: warning: excess elements in array initializer
sales.c:29: warning: (near initialization for `array[0][1]')
sales.c:29: warning: excess elements in array initializer
sales.c:29: warning: (near initialization for `array[0][1]')
sales.c:30: warning: excess elements in array initializer
sales.c:30: warning: (near initialization for `array[0][2]')
sales.c:30: warning: excess elements in array initializer
sales.c:30: warning: (near initialization for `array[0][2]')
sales.c:30: warning: excess elements in array initializer
sales.c:30: warning: (near initialization for `array[0][2]')
sales.c:31: warning: excess elements in array initializer
sales.c:31: warning: (near initialization for `array[0][3]')
sales.c:31: warning: excess elements in array initializer
sales.c:31: warning: (near initialization for `array[0][3]')
sales.c:31: warning: excess elements in array initializer
sales.c:31: warning: (near initialization for `array[0][3]')
sales.c:32: warning: excess elements in array initializer
sales.c:32: warning: (near initialization for `array[0][4]')
sales.c:32: warning: excess elements in array initializer
sales.c:32: warning: (near initialization for `array[0][4]')
sales.c:32: warning: excess elements in array initializer
sales.c:32: warning: (near initialization for `array[0][4]')
sales.c:32: warning: excess elements in array initializer
sales.c:32: warning: (near initialization for `array[0]')

当我通过丢失一对花括号而仅用2-d数组初始化时，编译器不会给出这些警告.有人可以暗示我在做什么错吗?

When I initialize with just a 2-d array by losing a pair of braces, the compiler doesn't give these warnings. Can anyone suggest what I am doing wrong?

推荐答案

维度1最特殊；您的括号也太多了:

The dimension 1 is most peculiar; you also have one too many levels of braces:

double array[5][4][1]=
{
  // {  These braces mean what follows is meant to initialize array[0], but
  //    there are 5 initializers for the 4 elements in array[0], and there
  //    are 4 initializers for each of the 'size 1' sub-arrays which is why
  //    the compiler complains about too many initializers for array[0][0][0], etc.
    {1,2,3,4},
    {5,6,7,8},
    {9,10,11,12},
    {13,14,15,16},
    {17,18,19,20}
  // }
};

这至少可以编译.完全括号的版本将在每个数字周围包含一对括号:

This would at least compile. The fully braced version would include a pair of braces around each number:

double array[5][4][1]=
{
    { {  1 }, {  2 }, {  3 }, {  4 }, },
    { {  5 }, {  6 }, {  7 }, {  8 }, },
    { {  9 }, { 10 }, { 11 }, { 12 }, },
    { { 13 }, { 14 }, { 15 }, { 16 }, },
    { { 17 }, { 18 }, { 19 }, { 20 }, },
};

这是5行，每行有4个子数组，每个子数组包含一个数字.

That's 5 lines, with 4 sub-arrays on each line, and each sub-array contains a single number.

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