什么是const X cx = {1}; [英] what is const X cx={1};
问题描述
是什么意思
其中X是
struct X
{
int i;
}
const X cx = {1};
帮助
sandspiderX
Hi,
What is meant by
where X is
struct X
{
int i;
}
const X cx={1};
Help
sandspiderX
推荐答案
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其中X是什么意思
struct X
{
int i;
}
const X cx = {1};
帮助
sandspiderX
Hi,
What is meant by
where X is
struct X
{
int i;
}
const X cx={1};
Help
sandspiderX
它正在用cx.i初始化cx分配给1.与X cx相同; cx.i = 1;
更多例子：
struct font
{
int size;
char * family;
int color_red;
int color_green;
int color_blue;
bool粗体;
bool斜体;
};
//你可以写
font myfont = {12，" times new roman"，255,10,10，true，false};
//而不是
font myfont2;
myfont2.size = 12;
myfont2.family =" times new roman" ;;
myfont2 .color_red = 255;
myfont2.color_green = 10;
myfont2.color_blue = 10;
myfont2.bold = true;
myfont2.italic = false;
问候，
ben
It''s initializing cx with cx.i assigned to 1. Same as X cx; cx.i = 1;
more example:
struct font
{
int size;
char* family;
int color_red;
int color_green;
int color_blue;
bool bold;
bool italic;
};
// you can write
font myfont = {12, "times new roman", 255, 10, 10, true, false};
// instead of
font myfont2;
myfont2.size = 12;
myfont2.family = "times new roman";
myfont2.color_red = 255;
myfont2.color_green = 10;
myfont2.color_blue = 10;
myfont2.bold = true;
myfont2.italic = false;
regards,
ben
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的含义是什么？
struct X
{
int i;
}
const X cx = {1};
帮助
sandspiderX
Hi,
What is meant by
where X is
struct X
{
int i;
}
const X cx={1};
Help
sandspiderX
它正在初始化cx，cx.i分配给1.与X cx相同; cx.i = 1;
更多例子：
struct font
{int / size>
char * family;
int color_red;
int color_green;
int color_blue;
bool bold;
bool italic;
};
//你可以写
字体myfont = {12，" times new roman"，255,10,10，true，false};
//而不是
字体myfont2;
myfont2.size = 12;
myfont2.family =" times new roman" ;;
myfont2.color_red = 255;
myfont2.color_green = 10;
myfont2.color_blue = 10;
myfont2.bold = true;
myfont2.italic = false;
问候，
本
It''s initializing cx with cx.i assigned to 1. Same as X cx; cx.i = 1;
more example:
struct font
{
int size;
char* family;
int color_red;
int color_green;
int color_blue;
bool bold;
bool italic;
};
// you can write
font myfont = {12, "times new roman", 255, 10, 10, true, false};
// instead of
font myfont2;
myfont2.size = 12;
myfont2.family = "times new roman";
myfont2.color_red = 255;
myfont2.color_green = 10;
myfont2.color_blue = 10;
myfont2.bold = true;
myfont2.italic = false;
regards,
ben
但是你还要添加''const''关键字，它告诉编译器
你不会改变X的值。
Allan
but you are also adding the ''const'' keyword which says to the compiler that
you are not going to change the value of X.
Allan
sandSpiderX写道：
sandSpiderX wrote:
是什么意思/>其中X是
struc t X
{
int i;
}
const X cx = {1};
帮助
sandspiderX
Hi,
What is meant by
where X is
struct X
{
int i;
}
const X cx={1};
Help
sandspiderX
这是一种初始化结构变量cx的方法，使得cx.i =
1.如果在X中声明了更多成员，那么你可以做到
{1,3 ....}
const关键字告诉cx变量一旦初始化将不会
有修改其成员的价值。
This is a way to initialise the structure variable cx such that cx.i =
1. If there were more members declared in X then you could have done
{1,3....}
The const keyword tells that the cx variable once intialised will not
have the value of its members modified.
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