c++ 3. Write a program that reads integers from a file, sums the values and calculates theaverage.a. Write a value-returning function that opens an input file named inFile.txt. You may"hard-code" the file name, i.e., you do not need to ask the user for the file name.The function should check the file state of the input file and return a valueindicating success or failure. Main should check the returned value and if the fileopen fails, output a message to cout and exit the program.b. Write a void function that reads the integers from the data file, sums the valuesand calculates the average of the values. Return the sum of the values, number of |values read and the average of the values to the calling module, main. Since youdo not know the number of values in the file, you must check for end of file.c. In main, output to cout the sum, number of values read and the average.d. Include the function prototypese. Declare the variables necessary to create a running program.f. Write statements for all include files, using statements and main.

PROGRAM: //Header files #include<iostream> #include<fstream> #include<string> //Using namespace using namespace std; //Declaring function prototype bool fileFound(ifstream& inFile,string fileName); void calculate(ifstream& myFile,int& sum,int& num,double& avg ); //Defining main int main(){ //Declaring file object ifstream inFile; //Initializing file name string fileName="inFile.txt"; //Declaring variables int sum=0,num=0; double average = 0; //Calling fileFound() function bool valueReturn = fileFound(inFile,fileName); //Checking the file exists or not if(!valueReturn){ cout<<"Failed to open the file"; return 0; } //Calling calculate() calculate(inFile,sum,num,average); //Printing the result cout<<"Sum: "<<sum<<endl; cout<<"Number of values: "<<num<<endl; cout<<"Average: "<<average<<endl; return 0; } //Defining fileFound() bool fileFound(ifstream& inFile,string fileName){ //Opening the file inFile.open(fileName); //If file failed to open if(inFile.fail()) //Return false return false; //Otherwise return true return true; } //Defining calculate() void calculate(ifstream& inFile,int& sum,int& numVal,double& average ) { //Declaring variables int count=0; int numbers; //Looping while (!inFile.eof()) { //Reading file data inFile >> numbers; //Computing sum sum+=numbers; //Counting number of values count++; } //Storing value numVal = count; //Computing average average = double(sum)/numVal; return ; }SCREENSHOT OF THE INPUT FILE:OUTPUT: