ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since 66ba544 was
67982887,
checked in by Peter A. Buhr <pabuhr@…>, 6 years ago
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specialize thesis directory-names
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Property mode set to
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File size:
699 bytes
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Rev | Line | |
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[9c14ae9] | 1 | #include <stdio.h> |
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| 2 | #include <ctype.h> |
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| 3 | |
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| 4 | int most_frequent(const char * str, char * ret_ch) { |
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| 5 | char freqs [26] = { 0 }; |
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| 6 | int ret_freq = 0; |
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| 7 | for (int i = 0; str[i] != '\0'; ++i) { |
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| 8 | if (isalpha(str[i])) { // only count letters |
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| 9 | int ch = tolower(str[i]); // convert to lower case |
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| 10 | int idx = ch-'a'; |
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| 11 | if (++freqs[idx] > ret_freq) { // update on new max |
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| 12 | ret_freq = freqs[idx]; |
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| 13 | *ret_ch = ch; |
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| 14 | } |
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| 15 | } |
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| 16 | } |
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| 17 | return ret_freq; |
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| 18 | } |
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| 19 | |
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| 20 | void dothing(const char * str) { |
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| 21 | char ch; |
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| 22 | int freq = most_frequent(str, &ch); |
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| 23 | printf("%s -- %d %c\n", str, freq, ch); |
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| 24 | } |
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| 25 | |
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| 26 | int main() { |
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| 27 | dothing("hello"); |
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| 28 | dothing("hello, world!"); |
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| 29 | dothing("aaabbbba"); |
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| 30 | dothing(""); |
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| 31 | } |
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