diff --git a/du3/program.c b/du3/program.c
index e69de29..77c6a14 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LINE_SIZE 100
+
+int main() {
+
+    char input[LINE_SIZE];
+    memset (input, '\0', LINE_SIZE);
+    char* end;
+
+    do {
+        char *citaj = fgets (input, LINE_SIZE, stdin);
+        if (input[0] != '\n' || input == NULL) exit(0);
+        float a;
+        float b;
+        float result;
+        char seg_a[20];
+        char operation[1];
+        char seg_b[20];
+        char seg_c[20];
+        int i = 0;
+        for (; i < LINE_SIZE; i++) {
+            if ((input[i] >= '0' && input[i] <= '9') || input[i] == '.') {
+                seg_a[i] = input[i];
+            }
+        }
+
+
+
+
+        memset (input, '\0', LINE_SIZE);
+    } while (input[0] != '\n')
+
+
+
+
+
+    return 0;
+}