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// 2678. Number of Senior Citizens
#include "leetcode.h"
/*
* you are given a 0-indexed array of strings 'details'. each element of
* 'details' provides information about a given passenger compressed into a
* string of length '15'. the system is such that the first ten characters of
* the phone number of passengers, the next character denotes the gender of the
* person, the following two characters are used to indicate the age of the
* person, and the last two characters determine the seat allotted to that
* person. return the number of passengers who are strictly more than 60 years
* old
*/
int countSeniors(char **details, int detailsSize) {
int age = 0, ans = 0;
for (int i = 0; i < detailsSize; i++) {
age = 10 * (details[i][11] - '0') + details[i][12] - '0';
if (age > 60)
ans++;
}
return ans;
}
int main() {
char *d1[] = {"7868190130M7522", "5303914400F9211", "9273338290F4010"},
*d2[] = {"1313579440F2036", "2921522980M5644"};
printf("%d\n", countSeniors((char **)d1, ARRAY_SIZE(d1))); // expect: 2
printf("%d\n", countSeniors((char **)d2, ARRAY_SIZE(d2))); // expect: 0
}
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