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/*
Exercise 1-14. Write a program to print a histogram of the frequencies of
different characters in its input.
===
*/
#include <stdio.h>
#define NCHAR 256 /* number of characters */
int main () {
int c, i, count[NCHAR]; /* character, index, character count */
for (i=0; i<NCHAR; i++) count[i]=0; /* initialise count to zero */
while ((c=getchar())!=EOF) /* for each character */
if (c!=' ' && c!='\t' && c!='\n') /* except spaces */
count[c]++; /* increment respective count */
for (i=0; i<NCHAR; i++) /* for each count */
if (count[i]) { /* if there were any */
printf("%c|", i); /* print label */
while (count[i]--)
putchar('-'); /* bar */
putchar('\n'); /* newline */
}
}
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