diff --git a/C/program-36/program.c b/C/program-36/program.c
new file mode 100644
index 00000000..9d823305
--- /dev/null
+++ b/C/program-36/program.c
@@ -0,0 +1,29 @@
+/*
+
+You are given a sorted (either in the increasing or in the decreasing order) sequence of numbers, ending with a -1. You can assume that are at least two numbers before the ending -1. 
+
+Let us call the sequence x0  x1 ... xn -1.
+
+You have to output the number of distinct elements in the sorted sequence.
+
+Kindly do not use arrays in the code. 
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main()
+{
+    int count=0,n=0,m;
+   while(n!=-1)
+   {
+   scanf("%d",&n);
+    if(m!=n) count++;
+    else continue;
+    m=n;
+
+   }
+printf("%d",count-1);
+    return 0;
+}