src/c/exercise1/count.c


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#include <stdio.h>

int
main()
{
    
    int c, i, nwhite, nother;
    int ndigit[10];

    nwhite = nother = 0;

    for (i = 0; i < 10; ++i)
        ndigit[i] = 0;
    
    while ((c = getchar()) != EOF)
        if (c >= '0' && c <= '9')
        ++ndigit[c-'0'];
    else if (c == ' ' || c == '\n' || c == '\t')
        ++nwhite;
    else
        ++nother;
    
    printf("digits =");
    
    for (i = 0; i < 10; ++i)
        printf(" %d", ndigit[i]);

    printf(", white space = %d, other = %d\n",
        nwhite, nother);

    return 0;
}