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#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
bool is_valid_password(char *pass, char *policy)
{
int min = atoi(policy);
char *minP = strchr(policy, '-');
int max = atoi(++minP);
char c = *(strchr(minP, ' ') + 1);
char *p = pass;
int occ = 0;
do {
if (*p == c) {
occ++;
}
} while (*++p);
return occ >= min && occ <= max;
}
int main(int argc, char *argv[])
{
FILE *file = fopen(argv[argc - 1], "r");
if (!file) {
return 1;
}
char buffer[128] = { 0 };
int valid = 0;
while (fgets(buffer, 128, file)) {
if (is_valid_password(strchr(buffer, ':') + 2, buffer)) {
valid++;
}
}
fclose(file);
printf("%i", valid);
}
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