word length counter

#include<stdio.h>
//this is private library holding the horzental and vertical histogram functions
#include "/app/oracle/11.2.0/grid/clang/mylib/priv_lib.h"
#define ON 1
#define OFF 0
#define SIZE 100
void VertHisto(int* array,int size);
void HorzHisto(int* array,int size);
int main()
{
        int c, i, arr[SIZE];
        int nc;

        short s = ON;
        for(i = 0;i < SIZE;i++)
                arr[i] = 0;
        i = nc = 0;

        while((c = getchar()) != EOF) {
                if(c == ' ' || c == '\t' || c == '\n') {
                        if(s == ON) {
                                s = OFF;
                                arr[i] = nc;
                                nc = 0;
                                i++;
                        }
                } else {
                        s = ON;
                        nc++;
                }
        }
        HorzHisto(arr,SIZE);
        printf("\n");
        return 0;
}