Сделал, но не проверил 10е Задание, TODO: Закончить его

10Ex/main.c

@@ -1 +1,42 @@
+#include <stdio.h>
+#include "tools.h"
 
+#define eps = 1.e-10
+
+double fmax(double a, double b) {
+    if ((a - b) > eps) return a;
+    return b;
+}
+
+double fmin(double a, double b) {
+    if ((a - b) > eps) return b;
+    return a;
+}
+
+int countBetween(FILE * file);
+
+int countBetween(FILE * file) {
+    double first, second, current;
+    int count = 0;
+
+    if ((fscanf(file, "%lf", &first) != 1) || (fscanf(file, "%lf", &second) != 1) {
+        printf("There is NO 2 variables\n");
+        return 1
+    }
+
+    current = fmax(first, second);
+    second = fmin(first, second);
+    first = current;
+
+    while (fscanf(file, "%lf" &current) == 1) {
+        if (((current - second) > eps) && ((first - current) < eps)) count++;
+    }
+    return count;
+}
+
+int main(void) {
+    FILE * file = getFile();
+    if (file == NULL) return 1;
+
+    printf("Count of number between first and second is %d", countBetween(file));
+}