4.1 white space or blank spaces requirements
White spaces are used in the strings which can be incorporated using the double quotes (“). Follow the below table containing the semantics required to provide the white spaces in the string sequence:
ESCAPE STRING
Character produced by escape string
\n
New line character
Verilog
module wh_sp;
initial begin
$display("This is First Line.\nThis is second line.");
end
endmodule
Output
This is First Line.
This is second line.
\t
TAB character
Verilog
module tb_char;
initial begin
$display("This is First Line.\tThis is second line.");
end
endmodule
Output
This is First Line. This is second line.
\\
\ character
Verilog
module tb_char;
initial begin
$display("This is First Line.\\ This is second line.");
end
endmodule
Output
This is First Line.\ This is second line.
\"
" character
Verilog
module tb_char;
initial begin
$display("This is First Line. \"This is second line.\"");
end
endmodule
Output
This is First Line. "This is second line."
\ddd
A character specified in 1-3 octal digits (0 <=d <= 7).
-
If less than three characters are used, the following character shall not be an octal digit.
-
Implementations may issue an error if the character represented is greater than \377.
​​​​​​​
Verilog
module octal_example;
reg [7:0] data;
initial begin
// Assign an octal value to the 'data' register
data = "\123"; // Octal 123 is equivalent to decimal 83
// Display the value in different formats
$display("Octal value: %o", data); //Display in octal
$display("Decimal value: %d", data); //Display in decimal
$display("Hexadecimal value: %h", data); //Display in hexadecimal
end
endmodule
Output
Octal value: 123
Decimal value: 83
Hexadecimal value: 53