• lili (17/17) Sep 03 2019 Hi guys:
• a11e99z (3/9) Sep 03 2019 https://dlang.org/library/std/stdio/readf.html
• lili (7/17) Sep 03 2019 string d = "3.4 3.3 ";
• a11e99z (2/14) Sep 03 2019
• a11e99z (2/10) Sep 03 2019

lili <akozhao tencent.com> writes:

Hi guys:

    input is two line, first line is a number n and second line is 
n float point number，
     e.g. 3
          1.1 2.2 3.3
     how use stdin.readf get all number. i code below but not work 
well.

         int n;
         stdin.readf!"%d\n"(n);
         writeln("read n:",n);

         foreach (i; 0..n)
         {
                 double x;
                 stdin.readf!"%f"(x); //only return first number, 
why？
                 writeln(x);
         }

a11e99z <black80 bk.ru> writes:

On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:
 Hi guys:

    input is two line, first line is a number n and second line 
 is n float point number，
     e.g. 3
          1.1 2.2 3.3
     how use stdin.readf get all number.

https://dlang.org/library/std/stdio/readf.html
see example

lili <akozhao tencent.com> writes:

On Tuesday, 3 September 2019 at 13:21:16 UTC, a11e99z wrote:
 On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:
 Hi guys:

    input is two line, first line is a number n and second line 
 is n float point number，
     e.g. 3
          1.1 2.2 3.3
     how use stdin.readf get all number.

 https://dlang.org/library/std/stdio/readf.html
 see example

         string d = "3.4    3.3 ";
         double a;
         double b;

         //formattedRead(d,"%f %f", &a, &b);

         d.readf!" %s %s"(a,b);//hug
         writeln(a,b);

a11e99z <black80 bk.ru> writes:

On Tuesday, 3 September 2019 at 13:25:30 UTC, lili wrote:
 On Tuesday, 3 September 2019 at 13:21:16 UTC, a11e99z wrote:
 On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:

         string d = "3.4    3.3 ";
         double a;
         double b;

         //formattedRead(d,"%f %f", &a, &b);

         d.readf!" %s %s"(a,b);//hug
         writeln(a,b);

and this too
 string ds = "1.1 2.2 3.3";
 double[] darr;
 ds.formattedRead!"%( %s%)"( darr );
 darr.writeln;

a11e99z <black80 bk.ru> writes:

On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:
 Hi guys:

    input is two line, first line is a number n and second line 
 is n float point number，
     e.g. 3
          1.1 2.2 3.3
     how use stdin.readf get all number.

u can read array this way too
 auto darr = readln.split.map!(x => x.to!double).array;
 darr.writeln;