digitalmars.D.learn - Reading bool as the string "true" or "false"
- Ali Cehreli (34/34) Jul 29 2009 I am trying to learn to read bool as a string and have it converted to b...
I am trying to learn to read bool as a string and have it converted to bool. Too much to ask? :) This is what I know in C++: #include <iostream> #include <iomanip> using namespace std; int main() { cin >> boolalpha; cout << boolalpha; bool b = false; cin >> b; cout << b << endl; } cin and cout use "false" and "true" for bool in that program. I know that 'bool alpha' is the default for D for the output, but how about the input? These attempts failed for me with dmd v2.029: import std.cstream; void main() { bool b; // Desired: din.readf(&b); // Segmentation fault when tried with false, 0, etc. // According to the std.format spec; but apparently for // output only: din.readf("%s", &b); // Segmentation fault when tried with false, 0, etc. // Again from the std.format spec because bool is perhaps // 'integral'? din.readf("%d", &b); // Segmentation fault when tried with false, 0, etc } Should I be using a different module? What am I doing wrong? Thank you, Ali
Jul 29 2009