On Sunday, 30 April 2017 at 03:20:20 UTC, JV wrote:
On Sunday, 30 April 2017 at 03:18:04 UTC, Adam D. Ruppe wrote:
On Sunday, 30 April 2017 at 03:10:25 UTC, JV wrote:
btw i forgot to add () at readln while editing the post
That's not necessary, it doesn't change anything.
But readln without arguments returns a string, not an int.
okay?? but how do i return an int?
tried using what i found in the internet like using stdio.conv;
to use toInt() but still shows error
Basically the simplest way would be:
int val;
readf("%d", &val);
But if you are dead set on using readln, you will need to parse
the line to obtain the integer value. The following demonstrates:
// Scherkl-Nielsen self-important lookup
template Module(string moduleName)
{
mixin("import Module = " ~ moduleName ~ ";");
}
void main()
{
with(Module!"std.stdio: readln, writeln")
with(Module!"std.conv: parse")
{
string line;
parse!int((line = readln)).writeln;
}
}
Your attempt failed because there is a '\n' character sitting at
the end of the line read in by readln. It cannot be converted to
an integer so any attempt to do so will result in an Exception
being thrown. As was the case with toInt.
-- Andrew
