问题描述
我想声明一个二维数组并为其赋值,而不需要运行 for 循环.
我认为我可以使用以下想法
int array[5] = {1,2,3,4,5};
这也可以很好地初始化二维数组.但显然我的编译器不喜欢这个.
/*1 8 12 20 255 9 13 24 26*/#include int main(){int arr[2][5] = {0};//这实际上将所有内容初始化为 0.arr [1] [] = {1,8,12,20,25};//第 11 行arr [2] [] = {5,9,13,24,26};返回0;}
J:CPPGrid>bcc32.exe Grid.cpp
Borland C++ 5.5.1 for Win32 版权所有 (c) 1993, 2000 Borland
Grid.cpp:
Error E2188 Grid.cpp 11:函数 main() 中的表达式语法
Error E2188 Grid.cpp 12:函数 main() 中的表达式语法
警告 W8004 Grid.cpp 14:'arr' 被分配了一个从未在函数中使用的值离子主()
* 2 编译错误 *
请帮助了解使用我的一组值初始化二维数组的正确方法是什么.
像这样:
int main(){int arr[2][5] ={{1,8,12,20,25},{5,9,13,24,26}};}
这应该在你的 C++ 教科书中涵盖:你在使用哪一本?
无论如何,最好考虑使用 std::vector
或一些现成的矩阵类,例如来自 Boost.
I wanted to declare a 2D array and assign values to it, without running a for loop.
I thought I could used the following idea
int array[5] = {1,2,3,4,5};
Which works fine to initialize the 2D array as well. But apparently my compiler doesn't like this.
/*
1 8 12 20 25
5 9 13 24 26
*/
#include <iostream.h>
int main()
{
int arr[2][5] = {0}; // This actually initializes everything to 0.
arr [1] [] = {1,8,12,20,25}; // Line 11
arr [2] [] = {5,9,13,24,26};
return 0;
}
Please help as to what is the right way to initialize the 2d array with my set of values.
Like this:
int main()
{
int arr[2][5] =
{
{1,8,12,20,25},
{5,9,13,24,26}
};
}
This should be covered by your C++ textbook: which one are you using?
Anyway, better, consider using std::vector
or some ready-made matrix class e.g. from Boost.
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