65 lines
1.3 KiB
D
65 lines
1.3 KiB
D
// FUNDAMENTAL DATA TYPES
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// this is a single line comment, it is ignored by the compiler
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/*
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this is a multiline comment
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...
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it is completely ignored by the compiler
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*/
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import std.stdio; // standard input/output library
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void main() {
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// 3 basic types: integers, floating-point, characters
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// basic data types
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int a; // declaration of a variable
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float b = 12.5; // initialization and declaration
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double c; // double precision of float
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char e; // a single character
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char letterA = 'A';
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// outputing the value of variable b
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writeln("The value of b: ", b);
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writeln("The value of letterA: ", letterA);
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// outputting multiple values
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int num = 115;
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int num2 = num;
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int num3 = num2;
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writeln("Num=", num, " Num2=", num2, " Num3=", num3);
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writeln(); // a new line
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// integer types
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/*
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signed types (positive and negative):
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byte 1 bytes
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short 2 ...
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int 4 ...
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long 8 bytes
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usigned types (only positive):
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ubyte 1 bytes
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ushort 2 ...
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uint 4 ...
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ulong 8 bytes
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*/
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// properties of types
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writeln("Name of the type : ", int.stringof);
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writeln("Size in bytes: ", int.sizeof);
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writeln("Min value : ", int.min);
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writeln("Max value : ", int.max);
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writeln("Initial value : ", int.init);
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/*
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Exercise:
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Check out what are the initial values of float, double, char.
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Write a comment about what you found.
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*/
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}
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