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markusfisch/horizontal_check_sum.c

Created November 25, 2016 13:17
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Calculate a horizontal check sum
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horizontal_check_sum.c
static int horizontal_check_sum(int number) {
int sum = 0;
for (int i = 1, mod = 0; mod != number; i *= 10) {
mod = number % (i * 10);
sum += mod / i;
}
return sum;
}
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