High-level Programming Language (Pascal)
Formatting Output
- the output format of an item can be specified by appending a format descriptor to the item in an output list
- the format descriptor takes one of the following forms :
:<w> or :<w> :<d>
- where w and d are integer-valued expressions
- :<w> is the field width
- specifies that the value is to be displayed in a field consisting of w spaces
- the value will be right justified in this field
- real values will be displayed in exponential form
- if the size of the field is too small, the field will be enlarged for the values
- :<w> :<d> is used to display real values in decimal form
- w is the field width, and d is the number of digits to be displayed to the right of the decimal points
- negative sign, decimal point and exponent symbol E form part of the field width
- the value will be rounded to a places or zero padded as necessary
- a list of examples
|
Action
|
Statement
|
Output
|
| 123456789012345 |
| Formatting integer values |
writeln (1235 :5);
writeln (1235 :0); |
1235
1235 |
|
Real values
|
writeln (1.235 :10);
writeln (1.235 :1:2); |
1.235E+01
1.24 |
|
Characters and strings
|
writeln ('A' :5);
writeln ('ABC' :0); |
A
ABC |
|
