A Laboratory Course in C++, 5th Edition

Chapter 9: Prelab Assignment

Scope, Lifetime, and More on Functions | 207

Name __________________________________________ Date _______________________

Section _________________________________________

Read program Scope carefully and then complete Exercises 1 through 6.

// Program Scope demonstrates scope rules and lifetime

// classes.

#include <iostream>

#include <fstream>

using namespace std;

int counter;

int sum = 0;

int number;

ifstream inNums;

void SumNumbers(ifstream& inFile, int& answer);

// Sums the numbers on inFile.

int main ()

{

inNums.open("numeric.dat");

{

int sum = 0;

SumNumbers(inNums, sum);

cout << "Output from first call to SumNumbers" << endl; ...