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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		/* <-- Deadfish Interpreted Computer Language --> */
/* <-- Programmed by Jonathan Todd Skinner    --> */
 
/* <-- Include Header File --> */
/* Updated the Code to Remove Uneeded Header Includes - JTS */
#include <stdio.h>
 
/* <-- Declare some variables --> */
unsigned int x; /* make a positive integer and call it x */
char usrinput; /* string to hold user input */
 
/* <-- Declare a function --> */
void entercommand(void);
 
/* <-- Start Main Function --> */
int main(void)
{
	/* At beginning of x is always 0 */
	x = 0;
	entercommand();
}
 
/* <-- Enter Command --> */
void entercommand(void)
{
	/* Accept User Input */
	printf(">> "); /* output shell symbol */
	scanf("%c",&usrinput); /* scan for user input that is char */
	/* Check for commands and do action */
	/* Make sure x is not greater then 256 */
	if(x == 256) x = 0;
	if(x == -1) x = 0;
	if(usrinput == 'i')
	{
		x++;
		entercommand();
	}		
	else if(usrinput == 'd')
	{
		x--;
		entercommand();
	}
	else if(usrinput == 'o')
	{
		printf("%d\n",x);
		entercommand();
	}
	else if(usrinput == 's')
	{
		x=x*x;
		entercommand();
	}
	else
	{
		printf("\n");
		entercommand();
	}
 
}
	}
}

Main.java:17: error: illegal character: '#'
#include <stdio.h>
^
Main.java:20: error: ';' expected
unsigned int x; /* make a positive integer and call it x */
        ^
Main.java:24: error: illegal start of expression
void entercommand(void);
^
Main.java:24: error: ';' expected
void entercommand(void);
                 ^
Main.java:24: error: illegal start of expression
void entercommand(void);
                  ^
Main.java:24: error: ';' expected
void entercommand(void);
                      ^
Main.java:27: error: ';' expected
int main(void)
        ^
Main.java:27: error: illegal start of expression
int main(void)
         ^
Main.java:27: error: ';' expected
int main(void)
             ^
Main.java:35: error: illegal start of expression
void entercommand(void)
^
Main.java:35: error: ';' expected
void entercommand(void)
                 ^
Main.java:35: error: illegal start of expression
void entercommand(void)
                  ^
Main.java:35: error: ';' expected
void entercommand(void)
                      ^
Main.java:39: error: illegal start of expression
	scanf("%c",&usrinput); /* scan for user input that is char */
	           ^
14 errors

Standard output is empty