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/*
Exercise 1-13. Write a program to print a histogram of the lengths of words in
its input. It is easy to draw the histogram with the bars horizontal; a
vertical orientation is more challenging.
===
*/
#include <stdio.h>
#define BUF 50 /* max word length */
int main () {
int c, l, i, lngst; /* character, length, index, longest */
int count[BUF]; /* length count */
/* initialise to zero */
for (i=0; i<BUF; i++) count[i]=0;
lngst=l=0;
while ((c=getchar())!=EOF) {
if (c==' ' || c=='\t' || c=='\n') { /* space */
if (l) { /* if word just ended */
if (l>lngst) lngst=l; /* update longest */
count[l-1]++; /* add length to count */
l=0; /* reset length count */
}
} else l++; /* count word length */
}
while (lngst--) { /* for each count */
printf("%2.d|", lngst+1); /* length */
while (count[lngst]--) putchar('-');/* count (bar) */
putchar('\n'); /* newline */
}
}
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