c++中,有一个含有多个成员变量的类,每秒钟保存一次这个类的所有变量名称和值,十秒钟后结束,如何把这些数据都保存到一个.mat文件里
时间: 2024-03-30 11:36:56 浏览: 95
要实现这个功能,可以使用Matlab Engine API来在C++代码中调用Matlab函数,并使用Matlab中的matfile函数来创建mat文件,并使用循环来每秒钟保存一次类的状态,最后将所有秒的类都保存到mat文件中。以下是一个示例代码:
```c++
#include <iostream>
#include <engine.h>
using namespace std;
int main()
{
// 初始化Matlab Engine
Engine *ep;
if (!(ep = engOpen(""))) {
cout << "Can't open MATLAB Engine" << endl;
return EXIT_FAILURE;
}
// 创建mat文件
engEvalString(ep, "m = matfile('classes.mat', 'Writable', true);");
mxArray *matlab_sec, *matlab_val;
// 循环保存类
for (int sec = 1; sec <= 10; sec++) {
// 创建类的实例,这里用假数据代替
int var1 = sec * 10;
double var2 = sec * 0.1;
char var3[10];
sprintf(var3, "sec%d", sec);
// 保存变量名和值
matlab_sec = mxCreateString(var3);
matlab_val = mxCreateDoubleScalar(var1);
engPutVariable(ep, "var1", matlab_val);
engPutVariable(ep, "var2", mxCreateDoubleScalar(var2));
engPutVariable(ep, "var3", matlab_sec);
engEvalString(ep, "m.(var3) = struct('var1', var1, 'var2', var2);");
// 等待一秒钟
Sleep(1000);
}
// 关闭Matlab Engine
engClose(ep);
return EXIT_SUCCESS;
}
```
这段代码使用Matlab Engine API在C++代码中调用Matlab函数来创建.mat文件,并在循环中每秒钟创建一个新的类的实例,并将其保存到.mat文件中。最终,.mat文件中将包含10个名为sec1到sec10的结构体变量,每个结构体包含了类的所有成员变量名和值。在保存变量名和值时,需要先将C++变量转换为Matlab变量,再使用engPutVariable函数将变量传递给Matlab。另外,注意在循环中使用Sleep函数等待一秒钟。
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