echo "enter the first num:"
read n1
echo "enter the second num:"
read n2
sum=`echo $n1 +$n2 |bc`
echo "sum="$sum
ZWNobyAiZW50ZXIgdGhlIGZpcnN0IG51bToiIApyZWFkIG4xCmVjaG8gImVudGVyIHRoZSBzZWNvbmQgbnVtOiIKcmVhZCBuMgpzdW09YGVjaG8gJG4xICskbjIgfGJjYAplY2hvICJzdW09IiRzdW0K
NAppIGxvdmUgaGFja2VycmFuawpoYWNrZXJyYW5rIGlzIGFuIGF3ZXNvbWUgcGxhY2UgZm9yIHByb2dyYW1tZXJzCmhhY2tlcnJhbmsKaSB0aGluayBoYWNrZXJyYW5rIGlzIGEgZ3JlYXQgcGxhY2UgdG8gaGFuZ291dA==
4
i love hackerrank
hackerrank is an awesome place for programmers
hackerrank
i think hackerrank is a great place to hangout