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author | Adam Carpenter <gitlab@53hor.net> | 2019-07-09 16:00:48 -0400 |
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committer | Adam Carpenter <gitlab@53hor.net> | 2019-07-09 16:00:48 -0400 |
commit | 39c0cbcc70aff47e17107826aa76cb525c83b122 (patch) | |
tree | df483af220a11aab49e0e3a76eea54f60efbd424 /ch1/num_digits.c | |
parent | 583fc81152e120ec5873f8057f11a894bb8b0a91 (diff) | |
download | learning-c-39c0cbcc70aff47e17107826aa76cb525c83b122.tar.xz learning-c-39c0cbcc70aff47e17107826aa76cb525c83b122.zip |
ch2
Diffstat (limited to 'ch1/num_digits.c')
-rw-r--r-- | ch1/num_digits.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/ch1/num_digits.c b/ch1/num_digits.c new file mode 100644 index 0000000..c25fc29 --- /dev/null +++ b/ch1/num_digits.c @@ -0,0 +1,29 @@ +#include<stdio.h> + +/* + * Count digits, whitespace, and other characters. + */ +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(", whitespace = %d, other = %d\n", + nwhite, nother); +} |