#include <cstdio>
#include "mat.h"
const char *path = "D:\\Codes\\MATLAB\\test.mat";
int diagnose(const char *file) {
    MATFile *pmat;
    const char **dir;
    const char *name;
    int ndir;
    int i;
    mxArray *pa;
    printf("Reading file %s...\n\n", file);
    /*
     * Open file to get directory
     */
    pmat = matOpen(file, "r");
    if (pmat == NULL) {
        printf("Error opening file %s\n", file);
        return (1);
    }
    /*
     * get directory of MAT-file
     */
    dir = (const char **) matGetDir(pmat, &ndir);
    if (dir == NULL) {
        printf("Error reading directory of file %s\n", file);
        return (1);
    } else {
        printf("Directory of %s:\n", file);
        for (i = 0; i < ndir; i++)
            printf("%s\n", dir[i]);
    }
    mxFree(dir);
    /* In order to use matGetNextXXX correctly, reopen file to read in headers. */
    if (matClose(pmat) != 0) {
        printf("Error closing file %s\n", file);
        return (1);
    }
    pmat = matOpen(file, "r");
    if (pmat == NULL) {
        printf("Error reopening file %s\n", file);
        return (1);
    }
    /* Get headers of all variables */
    printf("\nExamining the header for each variable:\n");
    for (i = 0; i < ndir; i++) {
        pa = matGetNextVariableInfo(pmat, &name);
        if (pa == NULL) {
            printf("Error reading in file %s\n", file);
            return (1);
        }
        /* Diagnose header pa */
        printf("According to its header, array %s has %d dimensions\n",
               name, mxGetNumberOfDimensions(pa));
        if (mxIsFromGlobalWS(pa))
            printf("  and was a global variable when saved\n");
        else
            printf("  and was a local variable when saved\n");
        mxDestroyArray(pa);
    }
    /* Reopen file to read in actual arrays. */
    if (matClose(pmat) != 0) {
        printf("Error closing file %s\n", file);
        return (1);
    }
    pmat = matOpen(file, "r");
    if (pmat == NULL) {
        printf("Error reopening file %s\n", file);
        return (1);
    }
    /* Read in each array. */
    printf("\nReading in the actual array contents:\n");
    for (i = 0; i < ndir; i++) {
        pa = matGetNextVariable(pmat, &name);
        if (pa == NULL) {
            printf("Error reading in file %s\n", file);
            return (1);
        }
        /*
         * Diagnose array pa
         */
        printf("According to its contents, array %s has %d dimensions\n",
               name, mxGetNumberOfDimensions(pa));
        if (mxIsFromGlobalWS(pa))
            printf("  and was a global variable when saved\n");
        else
            printf("  and was a local variable when saved\n");
        mxDestroyArray(pa);
    }
    if (matClose(pmat) != 0) {
        printf("Error closing file %s\n", file);
        return (1);
    }
    printf("Done\n");
    return (0);
}
int main() {
    int result;
    result = diagnose(path);
    if (!result) {
        printf("SUCCESS!\n");
    } else {
        printf("FALURE!\n");
    }
    return 0;
}

二、修改CmakeLists文件

設(shè)置包含路徑（相當于VS中的添加附加包含目錄）：

set(INC_DIR1 E:\\MATLAB\\R2019b\\extern\\include)
set(INC_DIR2 E:\\MATLAB\\R2019b\\extern\\include\\win64)
# head file path，頭文件目錄
include_directories(${INC_DIR1}) # 指定頭文件的搜索路徑，相當于指定 gcc 的 - I 參數(shù)
include_directories(${INC_DIR2}) # 指定頭文件的搜索路徑，相當于指定 gcc 的 - I 參數(shù)

設(shè)置庫目錄（相當于VS中的添加附加庫目錄），以及需要包含的庫（相當于VS中的添加附加依賴庫）：

set(LINK_DIR E:\\MATLAB\\R2019b\\extern\\lib\\win64\\mingw64
link_directories(${LINK_DIR}) # 動態(tài)鏈接庫或靜態(tài)鏈接庫的搜索路徑，相當于 gcc 的 - L 參數(shù)
link_libraries(libmat libmx libmex libeng) # All targets link with the same set of libs

下面是我的CmakeLists文件的完整內(nèi)容：

cmake_minimum_required(VERSION 3.21)
# project name，指定項目的名稱，一般和項目的文件夾名稱對應
project(read_mat)
# 設(shè)置參數(shù)
set(CMAKE_CXX_STANDARD 14)
set(INC_DIR1 E:\\MATLAB\\R2019b\\extern\\include)
set(INC_DIR2 E:\\MATLAB\\R2019b\\extern\\include\\win64)
set(LINK_DIR E:\\MATLAB\\R2019b\\extern\\lib\\win64\\mingw64)
# head file path，頭文件目錄
include_directories(${INC_DIR1}) # 指定頭文件的搜索路徑，相當于指定 gcc 的 - I 參數(shù)
include_directories(${INC_DIR2}) # 指定頭文件的搜索路徑，相當于指定 gcc 的 - I 參數(shù)
link_directories(${LINK_DIR}) # 動態(tài)鏈接庫或靜態(tài)鏈接庫的搜索路徑，相當于 gcc 的 - L 參數(shù)
link_libraries(libmat libmx libmex libeng) # All targets link with the same set of libs
cmake_minimum_required(VERSION 3.21)
add_executable(read_mat main.cpp)

三、添加環(huán)境變量

添加下面的環(huán)境變量，注意替換matlab安裝地址。

E:\MATLAB\R2019b\bin\win64
E:\MATLAB\R2019b\extern\lib\win64\mingw64

記得添加完環(huán)境變量后重啟一下電腦。

重啟完成后，對于部分人來說到這里整個配置就完成了，就能夠運行程序了。但是部分人比如說我自己，在運行的時候出現(xiàn)下面的錯誤：

Process finished with exit code -1073741515 (0xC0000135)

如果遇到這樣的錯誤，請繼續(xù)往下面看。

四、令人頭禿的錯誤

對于上面的錯誤，我嘗試了在網(wǎng)上搜索，可是沒有找到解決的辦法。然后我就使用VS配置了一遍，程序運行還是失敗了，提示遇到了如下的錯誤：

無法定位程序輸入點H5Rdereference于動態(tài)鏈接庫libmat.dll上

出現(xiàn)這種問題的原因是dll動態(tài)庫發(fā)生了沖突，我是因為添加了Anaconda的環(huán)境變量，在Anaconda中也有hdf5.dll文件，程序首先定位到了Anaconda的dll文件，而不是matlab的dll文件，解決沖突的辦法就是將Anacomda的環(huán)境變量移動到matlab環(huán)境變量之后即可。

記得修改完環(huán)境變量之后重啟一下電腦。

五、運行結(jié)果

解決完前面遇到的問題后，再次運行程序，可以看到成功了，程序輸出結(jié)果如下：

Directory of D:\Codes\MATLAB\DP-TBD\matlab_code\test.mat:
matrix

Examining the header for each variable:
According to its header, array matrix has 2 dimensions
and was a local variable when saved

Reading in the actual array contents:
According to its contents, array matrix has 2 dimensions
and was a local variable when saved
Done
SUCCESS!

Process finished with exit code 0