← Patterns
Write data in columns
123456789101112 | #include <iostream>
#include <iomanip>
int main()
{
std::cout << std::left << std::setw(12) << "John Smith"
<< std::right << std::setw(3) << 23
<< '\n';
std::cout << std::left << std::setw(12) << "Sam Brown"
<< std::right << std::setw(3) << 8
<< '\n';
} |
This pattern is licensed under the CC0 Public Domain Dedication.
Requires
c++98
or newer.
Intent
Align data in columns when writing to an output stream.
Description
On lines 6–11, we write two lines of data to an output stream.
std::cout is used as the example stream.
We use I/O manipulators to align the data in columns. The
std::setw manipulator sets the
width of a column, while std::left and
std::right set the alignment of the
written value within that column. For example, on line 6, we
write the name “John Smith” to a column of width 12 and align
it to the left of the column.