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import std.stdio;
struct ImaZero {
int x;
}
struct ImaNonZero {
int x = 10;
}
void main() {
writeln(__traits(isZeroInit, double));
writeln(__traits(isZeroInit, int));
writeln(__traits(isZeroInit, ImaZero));
writeln(__traits(isZeroInit, ImaNonZero));
}