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digitalmars.D - readln and readf issues

reply Jacob Marek <jacobmarek outlook.com> writes:
Hi! so I'm probably being dumb here however I'm having an issue 
getting readf and readln to work properly. It seems to be 
superseding the rest of my code. Allow me to explain. No matter 
where I put the readf/readln function it will get hung up in the 
console waiting for input. An example is below where this occurs 
(only after inputting an int and pressing enter does hello print) 
I am using eclipse with the standard DMD compiler. Any help is 
appreciated!

void main() {
	writeln("hello");
	int q;
	readf(" %s", &q);
}
Nov 11 2016
next sibling parent Robert burner Schadek <rburners gmail.com> writes:
On Friday, 11 November 2016 at 09:43:51 UTC, Jacob Marek wrote:

 Hi! so I'm probably being dumb here however I'm having an issue 
 getting readf and readln to work properly. It seems to be 
 superseding the rest of my code. Allow me to explain. No matter 
 where I put the readf/readln function it will get hung up in 
 the console waiting for input. An example is below where this 
 occurs (only after inputting an int and pressing enter does 
 hello print) I am using eclipse with the standard DMD compiler. 
 Any help is appreciated!

 void main() {
 	writeln("hello");
 	int q;
 	readf(" %s", &q);
 }


What platform? I'm not 100%, but on *nix writeln goes to stdout 
of the process and read* reads from stdin of the same process. 
The problem is that stdout is not connected stdin of the same 
process. In other words readf never gets past the "hello". Create 
two programs and connect them as such "writeProgram | 
readProgram".


p.s. next time, please post such to the learn subforum, thats 
properly a better place for this.
Nov 11 2016
prev sibling parent reply Daniel Kozak via Digitalmars-d <digitalmars-d puremagic.com> writes:
Dne 11.11.2016 v 10:43 Jacob Marek via Digitalmars-d napsal(a):


 Hi! so I'm probably being dumb here however I'm having an issue 
 getting readf and readln to work properly. It seems to be superseding 
 the rest of my code. Allow me to explain. No matter where I put the 
 readf/readln function it will get hung up in the console waiting for 
 input. An example is below where this occurs (only after inputting an 
 int and pressing enter does hello print) I am using eclipse with the 
 standard DMD compiler. Any help is appreciated!

 void main() {
     writeln("hello");
     int q;
     readf(" %s", &q);
 }


http://stackoverflow.com/questions/39165247/order-of-method-invocation-mixed-up
Nov 11 2016
parent Jacob Marek <jacobmarek outlook.com> writes:
On Friday, 11 November 2016 at 10:05:14 UTC, Daniel Kozak wrote:

 Dne 11.11.2016 v 10:43 Jacob Marek via Digitalmars-d napsal(a):


 Hi! so I'm probably being dumb here however I'm having an 
 issue getting readf and readln to work properly. It seems to 
 be superseding the rest of my code. Allow me to explain. No 
 matter where I put the readf/readln function it will get hung 
 up in the console waiting for input. An example is below where 
 this occurs (only after inputting an int and pressing enter 
 does hello print) I am using eclipse with the standard DMD 
 compiler. Any help is appreciated!

 void main() {
     writeln("hello");
     int q;
     readf(" %s", &q);
 }


 http://stackoverflow.com/questions/39165247/order-of-method-invocation-mixed-up


Thank you very much. That link had everything I needed to 
understand and fix the issue!
Nov 11 2016