I have a long value and I would like to convert it to a decimal of 3.
Sample values: 324 4353 53463
If a value has a length of 3, those numbers are the decimals like: 324 should be 0.324.
If it has 4 positions of more, the last 3 numbers are the decimals, example: 4353 should be 4.353 and 53463 should be 53.463.
What would be the best way to do this... Should I convert it to String and use string operations to add the . or is there an easier way to do this (doesn't seem right)?
I have a long value and I would like to convert it to a decimal of 3.
Per this and OP's other notes, its appears a string or print out is desired.
Nominally, the below will accomplishes this. Note that d will likely have a value that is only near the mathematically multiple of 0.001, but not exactly. Yet printf() will print a rounded value as desired.
long some_long = foo();
double d = some_long / 1000.0;
printf("%.3f\n", d);
But what happens when the values bits in long exceed the binary precision of double?
Print in 2 parts. Handling negative values is tricky: be sure to print the sign and use the absolute values of the most and lesser part and print leading zeros.
long some_long = foo();
long most = some_long / 1000;
long least = some_long % 1000;
printf("%s%ld.%03ld\n", "-" + (some_long >= 0), labs(most), labs(least));
[to wiki - not in it for the points]