Update README.md

README.md

@@ -1,2 +1,66 @@
 # BP_system
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct {
+    float **in;
+    float **out;
+} Sample;
+
+int testSize; // 全局变量存储测试集文件中的数据行数
+
+Sample *getTestData(const char *filename) {
+    FILE *file = fopen(filename, "r");
+    if (file == NULL) {
+        printf("Encountered an error while opening the file!\n");
+        return NULL;
+    }
+
+    int count = 0;
+    float tempIn, tempOut;
+
+    // 逐行读取数据，计算数据行数
+    while (fscanf(file, "%f %f", &tempIn, &tempOut) == 2) {
+        count++;
+    }
+
+    // 返回文件指针到文件起始位置
+    fseek(file, 0, SEEK_SET);
+
+    // 分配内存来存储 Sample 结构
+    Sample *result = (Sample *)malloc(sizeof(Sample));
+    result->in = (float **)malloc(count * sizeof(float *));
+    result->out = (float **)malloc(count * sizeof(float *));
+    for (int i = 0; i < count; i++) {
+        result->in[i] = (float *)malloc(2 * sizeof(float)); // 2 是输入值的数量
+        result->out[i] = (float *)malloc(sizeof(float)); // 1 是输出值的数量
+    }
+
+    int index = 0;
+
+    // 读取数据到分配的内存中
+    while (fscanf(file, "%f %f", &tempIn, &tempOut) == 2) {
+        result->in[index][0] = tempIn;
+        result->in[index][1] = tempOut;
+        result->out[index][0] = tempOut;
+        index++;
+    }
+
+    testSize = count; // 存储数据行数到全局变量
+
+    printf("The file has been successfully read!\n");
+    fclose(file);
+
+    return result;
+}
+void printData(Sample *data, int size) {
+    if (data == NULL) {
+        printf("Sample is empty!\n");
+        return;
+    }
+
+    for (int i = 0; i < size; i++) {
+        printf("Input 1: %f\tInput 2: %f\tOutput: %f\n", data->in[i][0], data->in[i][1], data->out[i][0]);
+    }
+}