diff --git a/Calculating factorial.c b/Calculating factorial.c
new file mode 100644
index 0000000..cbc1cb6
--- /dev/null
+++ b/Calculating factorial.c	
@@ -0,0 +1,17 @@
+// calculating factorials--
+#include <stdio.h>
+int main()
+{
+int n;
+int i;
+int a=1;
+scanf("%d",&n);
+if(n<0){
+    printf("factorial is 1");
+    break
+}
+for(i=1;i<=n;i++){
+   a*=i;
+}
+printf("%d",a);
+}
\ No newline at end of file