diff --git a/salary.c b/salary.c
new file mode 100644
index 0000000..7dbdf00
--- /dev/null
+++ b/salary.c
@@ -0,0 +1,20 @@
+#include<stdio.h>
+int main()
+{
+  int d1,d2,d3,d4,d5,n;
+  long int sum;
+  printf("enter a five digit nmber:");
+  scanf("%d",&n);
+  d1=n%10;
+  n=n/10;
+  d2=n%10;
+  n=n/10;
+  d3=n%10;
+  n=n/10;
+  d4=n%10;
+  n=n/10;
+  d5=n%10;
+  sum=d1+d2+d3+d4+d5;
+  printf("\n the sum of digit is:%ld",sum);
+  return 0;
+} 
\ No newline at end of file
diff --git a/si.py b/si.py
new file mode 100644
index 0000000..4362358
--- /dev/null
+++ b/si.py
@@ -0,0 +1,12 @@
+def simple_interest(p,t,r):
+    print('The principal is', p)
+    print('The time period is', t)
+    print('The rate of interest is',r)
+     
+    si = (p * t * r)/100
+     
+    print('The Simple Interest is', si)
+    return si
+     
+# Driver code
+simple_interest(8, 6, 8)
\ No newline at end of file