
Write a function template for a function that has parameters for a partially filled array and for a value of the base type of the array. If the value is in the partially filled array, then the function returns the index of the first indexed variable that contains the value. If the value is not in the array, the function returns −1. The base type of the array is a type parameter. Notice that you need two parameters to give the partially filled array: one for the array and one for the number of indexed variables used. Also, write a suitable test

Program plan:
- The function template “search” is defined with the three parameters.
- Inside the function definition, the “for” condition will iterate until the “i” value is less than “num” value.
- If “a[i]” is equal to “v” then return “i”, otherwise return -1.
- Inside the function definition, the “for” condition will iterate until the “i” value is less than “num” value.
- Define the main function.
- Declare the required variables and assign the value for those variables.
- Call the “search” function with the arguments.
- Check “i” is equal to “-1” or not.
- If the condition is true, display the search value is not found. Otherwise display the search element position.
The program is used to find the search element in the given array is as follows:
Explanation of Solution
Program:
//include the necessary header file
#include<iostream>
using namespace std;
//definition of template
template<typename T>
//definition of "search" function
int search(T a[], int num, T v)
{
//check the condition
for(int i = 0; i < num; i++)
//check the condition
if(a[i] == v)
//return "i" value
return i;
//return "-1" value
return -1;
}
//definition of main function
int main()
{
//declare and assign the array value
int a[20] = {1, 2, 4, 9, 3, 7, 6, 5, 10, 15};
//declare and assign the value
int num = 10;
int v = 6;
//declare and call the function
int i = search(a, num, v);
//check the condition
if(i == -1)
//display the result
cout<<v<<" is not found in the array\n";
else
//display the result
cout<<v<<" found at index "<<i<<"\n";
//return statement
return 0;
}
Output:
6 found at index 6
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