diff --git a/Array/Missing Number/C/solution.c b/Array/Missing Number/C/solution.c
new file mode 100644
index 0000000..97effa5
--- /dev/null
+++ b/Array/Missing Number/C/solution.c	
@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+void main()
+{
+    int n, i, j, c, t, b;
+    printf("n= ");
+    scanf("%d", &n);
+    int array[n - 1];
+    printf("nums= ");
+    for (i = 0; i < n - 1; i++)
+        scanf("%d", &array[i]);
+    b = array[0];
+    for (i = 1; i < n - 1; i++)
+        b = b ^ array[i];
+    for (i = 2, c = 1; i <= n; i++)
+        c = c ^ i;
+    c = c ^ b;
+    printf("%d \n", c);
+}
diff --git a/Contributors.md b/Contributors.md
index c711a66..9436bc5 100644
--- a/Contributors.md
+++ b/Contributors.md
@@ -30,4 +30,4 @@ Welcome to the list of people who contributed to this repo 💥
 13. [Saransh](https://github.com/saranshkotnala)
 14. [Eldrin](https://github.com/eldrin0)(Added Bubble Sort solution in JS)
 15. [amankumar988](https://github.com/amankumar988)(Solved Issues #18, #16, #20)
-16. [kesher988](https://github.com/kesher988)(solved issue #9,#24,#54,#29)
+16. [kesher988](https://github.com/kesher988)(solved issue #9,#24,#54,#29,#21)