C :

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
int main()
{
 //   freopen("in","r",stdin);
//    freopen("out","w",stdout);

	char  ch;
    while(scanf("%c", &ch)!=EOF)
    {

     getchar();

	if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
	{
		printf("It is an English character!\n");
	}
	else if (ch <= '9' && ch >= '0')
	{
	    	printf("It is a digit character!\n");
	}
	else if (ch == ' ')
	{
	    	printf("It is a space character!\n");
	}
	else
	{
		printf("It is other character!\n");
	}




    }
  return 0;
}

C++ :

#include<cstdio>
int main()
{
	char ch;
	while (scanf("%c", &ch) != EOF)
	{
		if (ch >= '0'&&ch <= '9')
			printf("It is a digit character!\n");
		else if ((ch >= 'A'&&ch <= 'Z') || (ch >= 'a'&&ch <= 'z'))
			printf("It is an English character!\n");
		else if (ch == ' ')
			printf("It is a space character!\n");
		else
			printf("It is other character!\n");
		getchar();
	}
	
}