Untitled

#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<ctype.h>
#define MAX 50

int stack[MAX]
char post[MAX]
int top=-1;
void pushstack(int tmp);
void calculator(char c);
void main(){
	int i ;
	clrscr();
	printf("insert a postfix notation :");
	gets(post);
	for(i=0;i<strlen(post);i++){
		if(post[i]>='0'&& post[i]<='0'){
			pushstack();
		}
		if(post[i]=='+'| post[i]=='-' |post[i]=='*' |post[i]=='/'|post[i]=='^'  ){
			calculator(post[i]);
		}
		printf("\n\n result:"%d",stack[top]);
		getch();
	}
}
void pushstack(int tmp){
	top++;
	stack[top]=(int)(post[tmp]-48);
}
void calculator