Help pplz. . convert infix to postfix. .

[Madzts]

Hi. . can any one help me in converting infix to postfix. . i do not know what is wrong in my code. . help!!!plz

#include<iostream>
#include<string>
#include<conio.h>
#include<stdio.h>
using namespace std;
void main()
{
 char stack[10];
 char input[10];
 char output[10];
 char plusminus,multdiv;
 int a;
 cout<<"\tInput an infix expression:";
 gets(input);
int i;
i=strlen(input);
cout<<strlen(input);
for(a=0;a<=i;a++){
  if(input[a]>='a'&&input[a]<='z'){
   
   output[a]=input[a];
  }
  else if(input[a]=='+'||input[a]=='-'){
   plusminus=input[a];
  }
  else if(input[a]=='*'||input[a]=='/'){
   multdiv=input[a];
  }
  if(input[a]==plusminus){
   stack[a]=input[a];
   if(stack[a]==plusminus&&stack[a+1]==plusminus){
    output[a]=stack[a];
   }
  }
  else if(input[a]==multdiv){
   stack[a]=input[a];
   if(stack[a]==multdiv&&stack[a+1]==multdiv){
    output[a]=stack[a];
   }
  } 
 }
  cout<<"\tPostfix Expression :"<<output<<"\n"; 
}

[andor]

First of all add code tags. Find out why void main and gets are bad. There is many posts about them.

Yes void main, gets (you're using c++ so no need for them anyway) conio.h all wrong and/or unnecessary.

http://www.daniweb.com/code/snippet599.html

See there for ideas.

[WaltP]

Hi. . can any one help me in converting infix to postfix. . i do not know what is wrong in my code. . help!!!plz

Neither do we, you didn't tell us what it's doing wrong, nor what it does right. We need information to understand the problem.

And check the following links to see what is wrong with gets() and void main()

[Afaq Haider]

Friends plz help me to write simple c++ program just to convert infix expression to postfix expression using stacks, i don't know abt C++ too much, just write a simple c++ program, i have to submit my assignment, mail me at: SNIP