81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
// stock01.cpp -- revised show() method
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#include <iostream>
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#include "stock00.h"
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void Stock::acquire(const std::string & co, long n, double pr)
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{
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company = co;
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if (n < 0)
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{
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std::cerr << "Number of shares can't be negative; "
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<< company << " shares set to 0.\n";
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shares = 0;
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}
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else
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shares = n;
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share_val = pr;
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set_tot();
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}
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void Stock::buy(long num, double price)
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{
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if (num < 0)
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{
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std::cerr << "Number of shares purchased can't be negative. "
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<< "Transaction is aborted.\n";
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}
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else
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{
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shares += num;
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share_val = price;
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set_tot();
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}
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}
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void Stock::sell(long num, double price)
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{
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using std::cerr;
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if (num < 0)
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{
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cerr << "Number of shares sold can't be negative. "
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<< "Transaction is aborted.\n";
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}
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else if (num > shares)
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{
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cerr << "You can't sell more than you have! "
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<< "Transaction is aborted.\n";
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}
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else
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{
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shares -= num;
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share_val = price;
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set_tot();
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}
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}
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void Stock::update(double price)
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{
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share_val = price;
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set_tot();
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}
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void Stock::show()
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{
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using std::cout;
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using std::ios_base;
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// set format to #.###
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ios_base::fmtflags orig = cout.setf(ios_base::fixed);
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int prec = cout.precision(3);
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cout << "Company: " << company
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<< " Shares: " << shares << '\n';
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cout << " Share Price: $" << share_val;
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// set format to *.**
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cout.precision(2);
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cout << " Total Worth: $" << total_val << '\n';
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// restore original format
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cout.setf(orig, ios_base::floatfield);
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cout.precision(prec);
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}
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