programming-examples/c++/Others/A generic stack that includes exception handling..cpp
2019-11-15 12:59:38 +01:00

87 lines
1.8 KiB
C++

A generic stack that includes exception handling.
#include <iostream>
using namespace std;
#define SIZE 10
template <class StackType> class stack {
StackType stck[SIZE];
int topOfStack;
public:
void init() {
topOfStack = 0;
}
void push(StackType ch);
StackType pop();
};
template <class StackType>
void stack<StackType>::push(StackType ob)
{
try {
if(topOfStack==SIZE) throw SIZE;
} catch(int) {
cout << "Stack is full.\n";
return;
}
stck[topOfStack] = ob;
topOfStack++;
}
template <class StackType>
StackType stack<StackType>::pop()
{
try {
if( topOfStack == 0)
throw 0;
} catch(int) {
cout << "Stack is empty.\n";
return 0;
}
topOfStack--;
return stck[topOfStack];
}
int main()
{
stack<char> stack1, stack2;
int i;
stack1.init();
stack2.init();
stack1.push('a');
stack2.push('x');
stack1.push('b');
stack2.push('y');
stack1.push('c');
stack2.push('z');
for(i = 0; i <3; i++)
cout << "Pop stack1: " << stack1.pop() << endl;
for(i = 0; i <4; i++)
cout << "Pop stack2: " << stack2.pop() << endl;
// demonstrate double stacks
stack<double> doubleValueStack1, doubleValueStack2; // create two stacks
// initialize the stacks
doubleValueStack1.init();
doubleValueStack2.init();
doubleValueStack1.push(1.1);
doubleValueStack2.push(2.2);
doubleValueStack1.push(3.3);
doubleValueStack2.push(4.4);
doubleValueStack1.push(5.5);
doubleValueStack2.push(6.6);
for(i = 0; i <3; i++)
cout << "Pop doubleValueStack1: " << doubleValueStack1.pop() << endl;
for(i = 0; i <4; i++)
cout << "Pop doubleValueStack2: " << doubleValueStack2.pop() << endl;
return 0;
}