blocks|key|3242786|text|您应该删除单个值两边的大括号：{和}。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3242787|struct+TECH+lut_model_1[2]+=+{{296.001465,
++++++++74.216972,
++++++++2.025908,
++++++++1.516384,
++++++++1,
++++++++{0.001746,
++++++++0.000256,+0.006216,+0.005249,+-0.001668,+-0.001377,+0.009865,+0.010454,+-0.000288,+-0.005853,+0.010584,+0.015440,+0.000465,+-0.000602,+0.004330,+0.005700,+0.017120,
++++++++0.233015,+0.034154,+0.244022,+0.007644,+0.385683,+0.042960,+0.406633,+-0.007811,+0.346931,+0.040123,+0.387361,+0.007030,+0.225309,+0.017897,+0.241024,+0.003700,
++++++++0.103601,+0.060748,+0.121059,+-0.045041,+0.076974,+0.070647,+0.148810,+-0.022399,+0.074007,+0.054797,+0.141794,+0.010376,+0.052482,+0.045013,+0.078443,+-0.019940,
++++++++-0.057353,+0.044285,+0.066622,+-0.058232,+-0.093817,+0.064753,+0.126611,+-0.008286,+-0.085634,+0.029582,+0.140443,+0.009189,+-0.052974,+0.036057,+0.087536}},

++++++++{309.270569,
++++++++74.520226,
++++++++2.088673,
++++++++1.595730,
++++++++1,
++++++++{-0.003261,
++++++++0.001452,+0.006673,+0.007092,+0.001020,+0.002904,+0.009037,+0.009587,+-0.001494,+0.000296,+0.009327,+0.010013,+-0.000301,+-0.002727,+0.005875,+0.008888,+-0.016850,
++++++++0.231185,+0.029758,+0.241629,+0.009411,+0.382748,+0.057553,+0.407984,+-0.019496,+0.393691,+0.045355,+0.411033,+-0.019787,+0.185746,+0.027101,+0.216863,+0.010189,
++++++++0.050463,+0.041380,+0.059462,+0.009747,+0.093188,+0.089831,+0.132579,+-0.049612,+0.058789,+0.075130,+0.122026,+-0.022185,+0.017041,+0.035450,+0.074255,+-0.002068,
++++++++-0.061219,+0.040752,+0.087084,+-0.013021,+-0.106098,+0.066566,+0.140099,+-0.041966,+-0.073433,+0.055231,+0.125908,+-0.003481,+-0.050690,+0.017257,+0.085251}}};|code-block|syntax|javascript|3242788|不会给出任何警告。|3242789|entityMap^0|F|1|H|1|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

You should remove the braces: <code>{</code> and <code>}</code> around single values.

<pre><code>struct TECH lut_model_1[2] = {{296.001465,
 74.216972,
 2.025908,
 1.516384,
 1,
 {0.001746,
 0.000256, 0.006216, 0.005249, -0.001668, -0.001377, 0.009865, 0.010454, -0.000288, -0.005853, 0.010584, 0.015440, 0.000465, -0.000602, 0.004330, 0.005700, 0.017120,
 0.233015, 0.034154, 0.244022, 0.007644, 0.385683, 0.042960, 0.406633, -0.007811, 0.346931, 0.040123, 0.387361, 0.007030, 0.225309, 0.017897, 0.241024, 0.003700,
 0.103601, 0.060748, 0.121059, -0.045041, 0.076974, 0.070647, 0.148810, -0.022399, 0.074007, 0.054797, 0.141794, 0.010376, 0.052482, 0.045013, 0.078443, -0.019940,
 -0.057353, 0.044285, 0.066622, -0.058232, -0.093817, 0.064753, 0.126611, -0.008286, -0.085634, 0.029582, 0.140443, 0.009189, -0.052974, 0.036057, 0.087536}},

 {309.270569,
 74.520226,
 2.088673,
 1.595730,
 1,
 {-0.003261,
 0.001452, 0.006673, 0.007092, 0.001020, 0.002904, 0.009037, 0.009587, -0.001494, 0.000296, 0.009327, 0.010013, -0.000301, -0.002727, 0.005875, 0.008888, -0.016850,
 0.231185, 0.029758, 0.241629, 0.009411, 0.382748, 0.057553, 0.407984, -0.019496, 0.393691, 0.045355, 0.411033, -0.019787, 0.185746, 0.027101, 0.216863, 0.010189,
 0.050463, 0.041380, 0.059462, 0.009747, 0.093188, 0.089831, 0.132579, -0.049612, 0.058789, 0.075130, 0.122026, -0.022185, 0.017041, 0.035450, 0.074255, -0.002068,
 -0.061219, 0.040752, 0.087084, -0.013021, -0.106098, 0.066566, 0.140099, -0.041966, -0.073433, 0.055231, 0.125908, -0.003481, -0.050690, 0.017257, 0.085251}}};
</code></pre>

will give no warning.

blocks|key|302995|text|这意味着你不需要把大括号放在像这样的地方：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|302996|++++{74.216972},|code-block|syntax|javascript|302997|基本上，你拥有的所有大括号都是可选的(除了外部的)，但是，你会得到一个不同的警告，因为在初始化器中没有包含嵌套的结构。基本上，如果您不介意这个警告，可以只用大括号括起嵌套的结构和数组；如果不是这样，可以根据需要使用它们来提高可读性。|302998|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

This means you needn't put braces in places like:

<pre><code> {74.216972},
</code></pre>

Basically, all the braces you have there are optional (except the outer ones), however, you will get a different warning for not embracing nested structs in the initializer. Basically, if you mind the warning, put braces around nested structs and arrays only; if not, use them to improve readability as you like.

blocks|key|297751|text|您可以通过用大括号将标量值(velocity1、temp等)括起来来初始化它们，这是不需要的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|297752|试试这个：|297753|struct+TECH+lut_model_1[2]+=+{{296.001465,
++++++++74.216972,
++++++++2.025908,
++++++++1.516384,
++++++++1,
++++++++{0.001746,
++++++++0.000256,+0.006216,+0.005249,+-0.001668,+-0.001377,+0.009865,+0.010454,+-0.000288,+-0.005853,+0.010584,+0.015440,+0.000465,+-0.000602,+0.004330,+0.005700,+0.017120,
++++++++0.233015,+0.034154,+0.244022,+0.007644,+0.385683,+0.042960,+0.406633,+-0.007811,+0.346931,+0.040123,+0.387361,+0.007030,+0.225309,+0.017897,+0.241024,+0.003700,
++++++++0.103601,+0.060748,+0.121059,+-0.045041,+0.076974,+0.070647,+0.148810,+-0.022399,+0.074007,+0.054797,+0.141794,+0.010376,+0.052482,+0.045013,+0.078443,+-0.019940,
++++++++-0.057353,+0.044285,+0.066622,+-0.058232,+-0.093817,+0.064753,+0.126611,+-0.008286,+-0.085634,+0.029582,+0.140443,+0.009189,+-0.052974,+0.036057,+0.087536}},

++++++++{309.270569,
++++++++74.520226,
++++++++2.088673,
++++++++1.595730,
++++++++1,
++++++++{-0.003261,
++++++++0.001452,+0.006673,+0.007092,+0.001020,+0.002904,+0.009037,+0.009587,+-0.001494,+0.000296,+0.009327,+0.010013,+-0.000301,+-0.002727,+0.005875,+0.008888,+-0.016850,
++++++++0.231185,+0.029758,+0.241629,+0.009411,+0.382748,+0.057553,+0.407984,+-0.019496,+0.393691,+0.045355,+0.411033,+-0.019787,+0.185746,+0.027101,+0.216863,+0.010189,
++++++++0.050463,+0.041380,+0.059462,+0.009747,+0.093188,+0.089831,+0.132579,+-0.049612,+0.058789,+0.075130,+0.122026,+-0.022185,+0.017041,+0.035450,+0.074255,+-0.002068,
++++++++-0.061219,+0.040752,+0.087084,+-0.013021,+-0.106098,+0.066566,+0.140099,+-0.041966,+-0.073433,+0.055231,+0.125908,+-0.003481,+-0.050690,+0.017257,+0.085251}}};|code-block|syntax|javascript|297754|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You initialize scalar values (velocity1, temp, etc) by surrounding them with braces, which is not needed.

Try this:

<pre><code>struct TECH lut_model_1[2] = {{296.001465,
 74.216972,
 2.025908,
 1.516384,
 1,
 {0.001746,
 0.000256, 0.006216, 0.005249, -0.001668, -0.001377, 0.009865, 0.010454, -0.000288, -0.005853, 0.010584, 0.015440, 0.000465, -0.000602, 0.004330, 0.005700, 0.017120,
 0.233015, 0.034154, 0.244022, 0.007644, 0.385683, 0.042960, 0.406633, -0.007811, 0.346931, 0.040123, 0.387361, 0.007030, 0.225309, 0.017897, 0.241024, 0.003700,
 0.103601, 0.060748, 0.121059, -0.045041, 0.076974, 0.070647, 0.148810, -0.022399, 0.074007, 0.054797, 0.141794, 0.010376, 0.052482, 0.045013, 0.078443, -0.019940,
 -0.057353, 0.044285, 0.066622, -0.058232, -0.093817, 0.064753, 0.126611, -0.008286, -0.085634, 0.029582, 0.140443, 0.009189, -0.052974, 0.036057, 0.087536}},

 {309.270569,
 74.520226,
 2.088673,
 1.595730,
 1,
 {-0.003261,
 0.001452, 0.006673, 0.007092, 0.001020, 0.002904, 0.009037, 0.009587, -0.001494, 0.000296, 0.009327, 0.010013, -0.000301, -0.002727, 0.005875, 0.008888, -0.016850,
 0.231185, 0.029758, 0.241629, 0.009411, 0.382748, 0.057553, 0.407984, -0.019496, 0.393691, 0.045355, 0.411033, -0.019787, 0.185746, 0.027101, 0.216863, 0.010189,
 0.050463, 0.041380, 0.059462, 0.009747, 0.093188, 0.089831, 0.132579, -0.049612, 0.058789, 0.075130, 0.122026, -0.022185, 0.017041, 0.035450, 0.074255, -0.002068,
 -0.061219, 0.040752, 0.087084, -0.013021, -0.106098, 0.066566, 0.140099, -0.041966, -0.073433, 0.055231, 0.125908, -0.003481, -0.050690, 0.017257, 0.085251}}};
</code></pre>

blocks|key|303043|text|这是一个标量初始化器：int+foo+=+3;|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|303044|这是一个带大括号的标量初始化器：int+foo+=+{3};|303045|这是一个数组的初始值设定项，它不是标量：int+foo[]+=+{1,+2,+3};|303046|警告说你的struct有带大括号的标量初始化器：|303047|typedef+struct+TECH
{

++++float+velocity1,+velocity2;
...

struct+TECH+lut_model_1[2]+=+{{{296.001465},
++++{74.216972},
...|code-block|syntax|javascript|303048|你的代码将会工作，它只是在标量初始化器周围有多余的花括号。如果您去掉大括号并将其格式化得更好一点(我会将第一个初始化器放在它自己的行上)，就不会有什么令人反感的地方了。|303049|entityMap^0|B|C|0|G|E|0|K|M|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|13|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|14|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

This is a scalar initializer: <code>int foo = 3;</code> 
This is a scalar initializer with braces around it: <code>int foo = {3};</code> 
This is an initializer of an array, which isn't scalar: <code>int foo[] = {1, 2, 3};</code>

The warning says that your struct has scalar initializers with braces around them:

<pre><code>typedef struct TECH
{

 float velocity1, velocity2;
...

struct TECH lut_model_1[2] = {{{296.001465},
 {74.216972},
...
</code></pre>

Your code will work, it just has superfluous braces around its scalar initializers. If you take the braces out and format it a little more nicely (I'd put the first initializer on its own line) there will be nothing objectionable about it.

blocks|key|3028720|text|在C语言中，在初始化标量值时使用额外的大括号是完全合法的，如|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3028721|int+x+=+{+5+};|code-block|syntax|javascript|3028722|即使你通常不会在真实的代码中看到这一点。在您的例子中，您正在做同样的事情，除了在您的例子中，标量值是一个更大的聚合的成员。|3028723|GCC为这样的代码生成警告。它认为你可能写了一些你不想写的东西，因为大多数时候大括号是用来启动聚合的多部分初始化器，而不是标量的独立初始化器。|3028724|<rant>GCC关于聚合初始化器中的花括号的警告肯定是把事情搞砸了。在C语言中，{+0+}一直被用作通用的零初始化器。至少应该让{+0+}免除与大括号相关的警告，因为它的惯用值。</rant>|offset|length|style|CODE|3028725|entityMap^0|0|0|0|0|0|6|15|5|1T|5|2I|7|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]|$M|11|N|12|O|P]|$M|13|N|14|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|R|$]]

In C language it is perfectly legal to use extra braces when initializing a scalar value, as in

<pre><code>int x = { 5 };
</code></pre>

even though you won't normally see this in real-life code. In your case you are doing the same thing, except that in your case the scalar value is a member of a larger aggregate.

GCC generates warnings for code like that. It believes that it is possible that you wrote something you didn't intend to write, since braces are most of the time are used to start a multi-part initializer for an aggregate, not a standalone initializer for a scalar.

<code>&lt;rant&gt;</code>GCC is definitely screwing things up with its warnings about braces in aggregate initializers. In C language the <code>{ 0 }</code> has always been used as an idiomatic universal zero-initializer. At least <code>{ 0 }</code> should have been made exempt from brace-related warnings for its idiomatic value.<code>&lt;/rant&gt;</code>

I have look-up-table as defined below and I'm making use of GCC. When I compile I get warnings as

<pre><code>warning: braces around scalar initializer
</code></pre>

What does this warning mean? How should I initialize this LUT? Am I making a mistake in initializing this structures?

Help!!

<hr>

<pre><code>typedef struct TECH
{

 float velocity1, velocity2;
 float temp;
 float measure;

 int id;
 float storage[64];

}TECH;

struct TECH lut_model_1[2] = {{{296.001465},
 {74.216972},
 {2.025908},
 {1.516384},
 {1},
 {0.001746,
 0.000256, 0.006216, 0.005249, -0.001668, -0.001377, 0.009865, 0.010454, -0.000288, -0.005853, 0.010584, 0.015440, 0.000465, -0.000602, 0.004330, 0.005700, 0.017120,
 0.233015, 0.034154, 0.244022, 0.007644, 0.385683, 0.042960, 0.406633, -0.007811, 0.346931, 0.040123, 0.387361, 0.007030, 0.225309, 0.017897, 0.241024, 0.003700,
 0.103601, 0.060748, 0.121059, -0.045041, 0.076974, 0.070647, 0.148810, -0.022399, 0.074007, 0.054797, 0.141794, 0.010376, 0.052482, 0.045013, 0.078443, -0.019940,
 -0.057353, 0.044285, 0.066622, -0.058232, -0.093817, 0.064753, 0.126611, -0.008286, -0.085634, 0.029582, 0.140443, 0.009189, -0.052974, 0.036057, 0.087536}},

 {{309.270569},
 {74.520226},
 {2.088673},
 {1.595730},
 {1},
 {-0.003261,
 0.001452, 0.006673, 0.007092, 0.001020, 0.002904, 0.009037, 0.009587, -0.001494, 0.000296, 0.009327, 0.010013, -0.000301, -0.002727, 0.005875, 0.008888, -0.016850,
 0.231185, 0.029758, 0.241629, 0.009411, 0.382748, 0.057553, 0.407984, -0.019496, 0.393691, 0.045355, 0.411033, -0.019787, 0.185746, 0.027101, 0.216863, 0.010189,
 0.050463, 0.041380, 0.059462, 0.009747, 0.093188, 0.089831, 0.132579, -0.049612, 0.058789, 0.075130, 0.122026, -0.022185, 0.017041, 0.035450, 0.074255, -0.002068,
 -0.061219, 0.040752, 0.087084, -0.013021, -0.106098, 0.066566, 0.140099, -0.041966, -0.073433, 0.055231, 0.125908, -0.003481, -0.050690, 0.017257, 0.085251}}};
</code></pre>

gcc warning: braces around scalar initializer

我有如下定义的查找表，我使用的是GCC。当我编译的时候，我得到的警告是warning: braces around scalar initializer这个警告是什么意思？我应该如何初始化这个LUT？我是不是在初始化这个结构时犯了一个错误？救命！！typedef struct TECH{    float veloci...

问gcc警告:标量初始值设定项周围有大括号
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