C Double

C double

Created By: chatGPT

In C, double is a data type that represents a double-precision floating point. It is used for storing decimal values that require higher precision compared to the float data type. The value range of a double is much larger and can store more decimal points, which makes it suitable for calculations that require a high level of accuracy.

#include <stdio.h>

int main() {
    double num1 = 5.75;
    double num2 = 2.50;
    double sum;

    sum = num1 + num2;

    printf("Sum: %.2f\n", sum);
    return 0;
}

In the example above, we have declared two double variables, num1 and num2, and assigned them decimal values. The sum of these two numbers is calculated and stored in the sum variable. Finally, the result is printed with formatted output using printf. The %.2f format specifier is used to display the sum with two decimal places.

#include <stdio.h>

int main() {
    double num1 = 5.75;
    double num2 = 2.50;
    double sum;

    sum = num1 + num2;

    printf("Sum: %.2f\n", sum);
    return 0;
}

When working with double values, it's essential to be aware of precision issues that can arise due to the representation of floating-point numbers in binary. This can lead to unexpected results in calculations. Therefore, using appropriate rounding techniques when necessary is crucial.

#include <stdio.h>
#include <math.h>

int main() {
    double value = 0.1 + 0.2;
    double roundedValue = round(value * 100) / 100;

    printf("Rounded Value: %.2f\n", roundedValue);
    return 0;
}

In the above code, we demonstrated how to round the result of 0.1 + 0.2 to two decimal places to avoid any precision shortcomings. The round function from the math library is used here to achieve the desired rounding effect before displaying the result.

#include <stdio.h>
#include <math.h>

int main() {
    double value = 0.1 + 0.2;
    double roundedValue = round(value * 100) / 100;

    printf("Rounded Value: %.2f\n", roundedValue);
    return 0;
}