Text = ? Dies ist ein Beispieltext

3 ##
4 #
12 #

Wer weiß wie das geht ?

/*
*
*   Solutions to the exericises of "The C Programming Language" book
*   by Brian W. Kernighan and Dennis M. Ritchie.
*
*   Exercise 1-14
*
*/

#include <stdio.h>

#define NUMBER_OF_CHARS 26 /* 'a' - 'z' */
#define IN 1
#define OUT 0

int main()
{
    int c;
    int state;
    int hist[NUMBER_OF_CHARS];
    int max;

    for(c=0; c<NUMBER_OF_CHARS; c++) {
        hist[c] = 0;
    }

    while((c=getchar()) != EOF) {
        if(c >= 'a' && c <= 'z') {
            hist[c-'a']++;
        }
    }

    /* vertical histogram */
    max = hist[0];
    for(c=1; c<NUMBER_OF_CHARS; c++) {
        if(hist[c] > max) {
            max = hist[c];
        }
    }

    state = IN;
    while(state == IN) {
        printf("\t");
        state = OUT;
        for(c=0; c<NUMBER_OF_CHARS; c++) {
            if(hist[c] > 0) {
                state = IN;
                if(hist[c] == max) {
                    hist[c]--;
                    printf(" - ");
                } else {
                    printf("   ");
                }
            } else {
                printf("   ");
            }
        }
        max--;
        printf("\n");
    }
    printf("freq:\t");
    for(c='a'; c<='z'; c++) {
        printf(" %c ", c);
    }

return 0;
}

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