C Language: Write a program statistics the number of occurrences of each number, white space character, and all other characters in the input string. __c language

#include <stdio.h> int main () {     int c = 0;   
   int num_count = 0;
     int emp_count = 0;
     int els_count = 0;
           while ((C = getchar ())  != eof)      {          if (c >=
  ' 0 ') && (c <=  ' 9 '))           {                num_count ++
 ;           }             else if (c ==  '   ')            {               emp_count ++;         &NBSP;&NBSP;&NBSP;&NBSP}           else            {           
    els_count ++;            } &NBSP;&NBSP;&NBSP;&NBSP;&NBSP}            printf ("%d %d
 %d ", Num_count,emp_count,els_count);      return 0; }

In addition, Method 2 compares with the method 1

(1) Each number can be calculated specifically several times.

(2) a function isspace () is used for the space.

#include <stdio.h> int main () {     int c = 0;   
   int num_count = 0;
     int emp_count = 0;
     int els_count = 0;
     int arr[10] ={0};
     int i = 0;
           while ((C = getchar ())  != eof)      {          if (c >=   ' 0 ' &&c <=  ' 9 ')           {                arr[c-' 0 '] ++;                }             else if (Isspace (c))           {     
          emp_count ++;           }            else           {                els_count ++;       &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP}      }         
   printf ("emp_count: %d\n", Emp_count);
     printf ("els_count: %d\n", Els_count);            for ( ; i<10;i++)       {          printf ("%d:%d\n",  i, arr[i) );    &NBSP;&NBSP;&NBSP}      return 0; }