How can I efficiently format data tables in C using simplified syntax?-C++-php.cn

How can I efficiently format data tables in C using simplified syntax?

Susan Sarandon

Release： 2024-11-17 06:11:03

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How can I efficiently format data tables in C using simplified syntax?

Formatting Data Tables with Simplified Syntax in C

In C , efficiently formatting tabular data is made possible with the <> header, providing three key functions:

setw(): Specifies the output width.
setfill(): Pads empty space with the desired character.
left or right: Dictates text alignment within the specified width.

Consider the sample data below, where the goal is to align and format the data into columns and rows:

Bob Doe     10.96      7.61     14.39      2.11     47.30     14.21     44.58      5.00     60.23
Helen City     10.44      7.78     16.27      1.99     48.92     13.93     53.79      5.00     70.97
Joe Green     10.90      7.33     14.49      2.05     47.91     14.15     44.45      4.70     73.98

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To align and format the data:

// Header Files
#include <iostream>
#include <iomanip>

// Constants
const char separator = ' ';
const int nameWidth = 6;
const int numWidth = 8;

// Main Function
int main() {
    // Example Usage
    cout << left << setw(nameWidth) << setfill(separator) << "Bob";
    cout << left << setw(nameWidth) << setfill(separator) << "Doe";
    cout << left << setw(numWidth) << setfill(separator) << 10.96;
    // ... (Additional code to continue formatting remaining data)

    // Maintain console
    cin.get();
    return 0;
}

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Output:

Bob Doe      10.96   7.61  14.39   2.11  47.30  14.21  44.58   5.00  60.23

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Alternatively, a template function can be defined to streamline the formatting process:

// Template Function for Efficient Formatting
template<typename T>
void printElement(T t, const int& width) {
    cout << left << setw(width) << setfill(separator) << t;
}

// Main Function
int main() {
    printElement("Bob", nameWidth);
    printElement("Doe", nameWidth);
    printElement(10.96, numWidth);
    // ... (Additional code to continue formatting remaining data)

    // Maintain console
    cin.get();
    return 0;
}

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With the template function, data formatting is simplified into a concise call:

printElement("Bob", nameWidth);

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Utilizing these techniques in C , formatting data tables becomes effortless and customizable to your desired output.

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