diff --git a/src/C/faktorial.c b/src/C/faktorial.c
new file mode 100644
index 0000000..1a10d4e
--- /dev/null
+++ b/src/C/faktorial.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+typedef long long ll;
+
+ll faktorial(ll a){
+    if(a == 0)
+        return 1;
+    return a * faktorial(a-1);
+}
+
+
+int main(void){
+    ll inp;
+    printf("Masukkan angka : ");
+    scanf("%lld", &inp);
+    (inp < 0) || (inp >63 )? printf("Angka harus >= 0 dan <= 63\n") : 0;
+    printf("%lld", faktorial(inp));
+}