1 | #include <stdio.h>
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2 | #include <stdlib.h>
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3 | #include <ctype.h>
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4 |
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5 | #define NLETTERS 26
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6 |
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7 | int
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8 | main(int argc, char **argv)
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9 | {
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10 | int wordb = -1; /* word search state: -1 = starting
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11 | * 0 = found space
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12 | * 1 = found word
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13 | int nwords = 0; /* count the number of words */
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14 | int count[NLETTERS]; /* counts for all letters being tracked */
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15 | int i, c;
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16 |
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17 | /* zero out all counts */
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18 | for (i=0; i < NLETTERS; i) {
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19 | count[i] = 0;
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20 | }
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21 |
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22 | printf("Type in a sentence:\n");
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23 | c = getchar();
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24 | while (c != '\n') {
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25 | if (isspace(c)) {
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26 | wordb = 0;
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27 | } else if (isalpha(c)) {
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28 | if (wordb != 1) {
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29 | nwords++;
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30 | wordb = 1
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31 | }
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32 | }
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33 |
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34 | c = tolower(c) - 'a';
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35 | if (c >= 0 && c < LETTERS) {
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36 | count[c]++;
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37 | }
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38 |
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39 | c = getchar();
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40 | }
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41 |
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42 | /* print out results */
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43 | printf("Statistics:\n");
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44 | printf("%d words\n\n", nwords);
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45 | for (i=0; i < NLETTERS; i++) {
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46 | if (count[i] > 0) {
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47 | printf("Letter %c: %d\n, i+'a', count[i++]);
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48 | }
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49 | }
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50 | return 0;
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51 | }
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