diff --git a/src/main/c/BasicMode.c b/src/main/c/BasicMode.c
index 2c09276..0b1bc48 100644
--- a/src/main/c/BasicMode.c
+++ b/src/main/c/BasicMode.c
@@ -19,3 +19,16 @@ long long int DecToBin(long long int n) {
 
     return bin;
 }
+// convert binary to decimal
+long long int BinToDec(long long int n) {
+    long long int dec = 0, i = 0, rem;
+
+    while (n != 0) {
+        rem = n % 10;
+        dec += rem * pow(2, i);
+        i++;
+        n /= 10;
+    }
+
+    return  dec;
+}