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Definition of function “firstLast2()”
Program Plan for “firstLast2()” function:
- The function “firstLast2()” should declared before it defined in a program.
- Define the function with its argument.
- One argument is to get array values and another one is to define the size of the array.
- Using “if…else” condition, check the array beginning and end value “2” or not.
- If the condition is true, return “true” to calling function.
- Otherwise return “false” to calling function.
Program Plan for testing code:
- Include the appropriate headers into program.
- Define the “firstLast2()” function.
- Define the “main()” method.
- Initialize the arrays with a value “2” at starting, ending, and middle position of arrays.
- Call the “firstLast2()” function with resultant value using “if…else” condition.
- Print the appropriate statement on screen.
Program Description:
The following C++ program to define the “firstLast2()” function with a testing method.
Explanation of Solution
Function definition:
//Function definition with bool type
bool firstLast2(int arr[],int size)
{
//Condition
if(arr[0]==2||arr[size-1]==2)
{
/*Return true to calling Function*/
return true;
}
//Else statement
else
{
/*Return false to calling Function*/
return false;
}
}
Testing code:
//Include the appropriate headers
#include <iostream>
using namespace std;
//Function definition with bool type
bool firstLast2(int arr[],int size)
{
//Condition
if(arr[0]==2||arr[size-1]==2)
{
/*Return true to calling Function*/
return true;
}
//Else statement
else
{
/*Return false to calling Function*/
return false;
}
}
//Main method
int main()
{
/*Initialization of arrays with different length*/
int a1[5]={2,5,6,5,1};
int a2[4]={5,6,1,2};
int a3[7]={6,4,5,2,5,1,1};
int a4[3]={6,5,1};
/*Condition to check first array*/
if(firstLast2(a1, 5))
{
/*Print statement for true block*/
cout<<"The array contains a value 2 either at beginning and end of the array\n";
}
//Else statement
else{
/*Print statement for false block*/
cout<<"The array does not contains a value 2 either at beginning and end of the array\n";
}
/*Condition to check second array*/
if(firstLast2(a2, 4))
{
/*Print statement for true block*/
cout<<"The array contains a value 2 either at beginning and end of the array\n";
}
//Else statement
else{
/*Print statement for false block*/
cout<<"The array does not contains a value 2 either at beginning and end of the array\n";
}
/*Condition to check third array*/
if(firstLast2(a3, 7))
{
/*Print statement for true block*/
cout<<"The array contains a value 2 either at beginning and end of the array\n";
}
//Else statement
else{
/*Print statement for false block*/
cout<<"The array does not contains a value 2 either at beginning and end of the array\n";
}
/*Condition to check fourth array*/
if(firstLast2(a4, 3))
{
/*Print statement for true block*/
cout<<"The array contains a value 2 either at beginning and end of the array\n";
}
//Else statement
else{
/*Print statement for false block*/
cout<<"The array does not contains a value 2 either at beginning and end of the array\n";
}
}
Output:
The array contains a value 2 either at beginning and end of the array
The array contains a value 2 either at beginning and end of the array
The array does not contains a value 2 either at beginning and end of the array
The array does not contains a value 2 either at beginning and end of the array
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