Convert the long integer variable sec into a single-byte BCD code and store it in the display buffer array
unsigned char a[10];
void long_to_bcd(unsigned long sec)
{
a[0] = sec % 10; // Get the ones digit
a[1] = sec / 10 % 10; // Get the tens digit
a[2] = sec / 100 % 10; // Get the hundreds digit
a[3] = sec / 1000 % 10; // Get the thousands digit
a[4] = sec / 10000 % 10; // Get the ten thousand digit
a[5] = sec / 100000 % 10; // Get the hundred thousand digit
a[6] = sec / 1000000 % 10; // Get the million digit
a[7] = sec / 10000000 % 10; // Get the ten million digit
a[8] = sec / 100000000 % 10; // get the billionth digit
a[9] = sec / 1000000000 % 10; // get the billionth digit
}
Reference address：The most commonly used Long variable to BCD code
unsigned char a[10];
void long_to_bcd(unsigned long sec)
{
a[0] = sec % 10; // Get the ones digit
a[1] = sec / 10 % 10; // Get the tens digit
a[2] = sec / 100 % 10; // Get the hundreds digit
a[3] = sec / 1000 % 10; // Get the thousands digit
a[4] = sec / 10000 % 10; // Get the ten thousand digit
a[5] = sec / 100000 % 10; // Get the hundred thousand digit
a[6] = sec / 1000000 % 10; // Get the million digit
a[7] = sec / 10000000 % 10; // Get the ten million digit
a[8] = sec / 100000000 % 10; // get the billionth digit
a[9] = sec / 1000000000 % 10; // get the billionth digit
}
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