Assume the following recursive function:  int sequence(int num) //Line 1 { //Line 2 if (num == 0) //Line 3 return num; //Line 4 else //Line 5 return(num + sequence num - 1)); //Line 6 } //Line 7 a. Identify the base case. b. Identify the general case. c. What valid values can be passed as parameters to the function sequence? d. If sequence (-3) is a valid call, what is its value? If not, explain why.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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1. Assume the following recursive function: 
int sequence(int num) //Line 1
{ //Line 2
if (num == 0) //Line 3
return num; //Line 4
else //Line 5
return(num + sequence num - 1)); //Line 6
} //Line 7
a. Identify the base case.
b. Identify the general case.
c. What valid values can be passed as parameters to the function sequence?
d. If sequence (-3) is a valid call, what is its value? If not, explain why.

(Data structure and algorithm in c++)

 

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