92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
A generic stack that holds two values.
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#include <iostream>
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using namespace std;
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#define SIZE 10
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template <class StackType> class stack {
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StackType stck[SIZE][2];
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int topOfStack;
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public:
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void init() { topOfStack = 0; }
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void push(StackType ob, StackType object2);
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StackType pop(StackType &object2);
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};
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template <class StackType>
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void stack<StackType>::push(StackType ob, StackType object2)
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{
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if(topOfStack==SIZE) {
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cout << "Stack is full.\n";
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return;
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}
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stck[topOfStack][0] = ob;
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stck[topOfStack][1] = object2;
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topOfStack++;
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}
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template <class StackType>
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StackType stack<StackType>::pop(StackType &object2)
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{
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if(topOfStack==0) {
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cout << "Stack is empty.\n";
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return 0;
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}
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topOfStack--;
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object2 = stck[topOfStack][1];
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return stck[topOfStack][0];
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}
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int main()
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{
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stack<char> stack1, stackObject2;
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int i;
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char ch;
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stack1.init();
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stackObject2.init();
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stack1.push('a', 'b');
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stackObject2.push('x', 'z');
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stack1.push('b', 'd');
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stackObject2.push('y', 'e');
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stack1.push('c', 'a');
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stackObject2.push('z', 'x');
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for(i = 0; i <3; i++) {
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cout << "Pop stack1: " << stack1.pop(ch);
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cout << ' ' << ch << endl;
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}
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for(i = 0; i <3; i++) {
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cout << "Pop stackObject2: " << stackObject2.pop(ch);
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cout << ' ' << ch << endl;
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}
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// demonstrate double stacks
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stack<double> doubleValueStack1, doubleValueStack2; // create two stacks
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double d;
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doubleValueStack1.init();
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doubleValueStack2.init();
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doubleValueStack1.push(1.1, 2.0);
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doubleValueStack2.push(2.2, 3.0);
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doubleValueStack1.push(3.3, 4.0);
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doubleValueStack2.push(4.4, 5.0);
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doubleValueStack1.push(5.5, 6.0);
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doubleValueStack2.push(6.6, 7.0);
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for(i = 0; i <3; i++) {
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cout << "Pop doubleValueStack1: " << doubleValueStack1.pop(d);
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cout << ' '<< d << endl;
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}
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for(i = 0; i <3; i++) {
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cout << "Pop doubleValueStack2: " << doubleValueStack2.pop(d);
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cout << ' '<< d << endl;
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}
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return 0;
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}
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