#include <iostream.h>//input &output
#include <string.h>//string function
#include <conio.h>//getch function
int main()
{
int i=0,top=-1,j=0;//tarife esharegar be araye
char infix[20],stack[20],postfix[20];
char r='y';

while(r=='y')
{
	for(int c=0;c<20;c++)
	{
infix[c]='\0';
postfix[c]='\0';
stack[c]='\0';
i=0;
j=0;
top=-1;

	}

cout<<"please type infix phrases :";
cin>>infix;

while(infix[i]!='\0')
{
	if(infix[i]=='(' || infix[i]=='+' || infix[i]=='-' || infix[i]=='/' || infix[i]=='*' || infix[i]=='^')
		stack[++top]=infix[i];
	else if(infix[i]==')')
	{
				while(stack[top]!='(' && top>=0)
				{
					postfix[++j]=stack[top];
					top--;
				}
if(stack[top]=='(')	
				
top--;

	}
		else
		postfix[++j]=infix[i];

	
i++;

}
if(top>=0)
for(int cc=top;cc>=0;cc--)
postfix[++j]=stack[cc];

cout<<"postfix phrases of "<<infix <<" is :";
for(int k=1;k<=j;k++)
cout<<postfix[k];

cout<<endl;
cout<<"do you want type a new infix phrases?";
cin>>r;
	cout<<"\n******************************************\n";
}

getch();


}