111

[Lisa via Digitalmars-d-learn]

On Saturday, 20 February 2016 at 12:59:58 UTC, Ivan Kazmenko 
wrote:
> On Saturday, 20 February 2016 at 04:15:50 UTC, Lisa wrote:
>> module main;
>>
>> import std.stdio;
>> import std.math;
>>
>> int main() {
>> 	int A, B, C;
>> 	writef("A = ");
>> 	readf("%lf", %A);
>>
>> 	writef("B = ");
>> 	readf("%lf", %B);
>>
>> 	writef("C1= ");
>> 	readf("%lf", %C);
>>
>> 	writefl("P = (%lf)", A + B + C);
>> 	return 0;
>> }
>>
>> It whatever doesn't work
>
> The line "int A, B, C;" should be "double A, B, C;" if you want 
> to be able to operate non-integer lengths as well.
>
> The lines like "readf("%lf", %A);" should be "readf(" %s", 
> &A);".
>  Please read the reasoning again carefully in Ali's book: 
> http://ddili.org/ders/d.en/input.html.  The " %s" can be " %f" 
> but not " %lf" (that would be the correct string for C's printf 
> but not for D's readf), and the leading space is important.
>
> On the output line, you perhaps meant "writefln" instead of 
> "writefl".  Again, "%lf" should be changed into "%f" or "%s".

import std.stdio;
import std.math;

void main() {

	writef("Enter side A: ");
	double A;
	readf("%s", &A);

	writef("Enter side B: ");
	double B;
	readf("%s", &B);

	writef("Enter side C: ");
	double C;
	readf("%s", &C);
	
	writefln("Perimetr is", A + B + C, " centimetrs.");

	return 0;
}

Is there smth wrong again?