Arrays

Given below is the list of marks obtained by a class of 50 students in an annual examination.
43 65 51 27 79 11 56 61 52 09 25 36 07 49 55 63 74 81 49 37
40 49 16 75 87 91 33 24 58 78 65 56 76 67 45 54 35 63 12 21
73 49 51 19 39 49 68 93 85 59
Write a program to count the number of students belonging to each of following groups of marks: 0-9, 10-19, 20-29 .....100.

#include <stdio.h>
#define   MAXVAL    50
#define   COUNTER   11
void main()
   {
       float        value[MAXVAL];
       int          i, low, high;
       int   group[COUNTER] = {0,0,0,0,0,0,0,0,0,0,0};
  /* . . . . . . . .READING AND COUNTING . . . .  . .*/
       for( i = 0 ; i < MAXVAL ; i++ )
       {
/*. . . . . . . .READING OF VALUES . . . . . . . . */
   scanf("%f", &value[i]) ;
 /*. . . . . .COUNTING FREQUENCY OF GROUPS. . . . . */
   ++ group[ (int) ( value[i] + 0.5 ) / 10] ;
       }
 /* . . . .PRINTING OF FREQUENCY TABLE . . . . . . .*/
       printf("\n");
       printf(" GROUP     RANGE     FREQUENCY\n\n") ;
       for( i = 0 ; i < COUNTER ; i++ )
       {
   low  = i * 10 ;
   if(i == 10)
     high = 100 ;
   else
     high = low + 9 ;
   printf("  %2d    %3d to %3d       %d\n",
    i+1, low, high, group[i] ) ;
       }
       getch();
   }