Floating Point

double values store fractional numbers and are printed with floating-point formats.

floating_point.c

#include <stdio.h>

int main(void) {
    double price = ;
    double taxRate = 0.08;
    double total = price + price * taxRate;

    printf("price=%.2f\n", price);
    printf("total=%.2f\n", total);
    return 0;
}

#include <stdio.h>

int main(void) {
    double price = ;
    double taxRate = 0.08;
    double total = price + price * taxRate;

    printf("price=%.2f\n", price);
    printf("total=%.2f\n", total);
    return 0;
}

#include <stdio.h>

int main(void) {
    double price = ;
    double taxRate = 0.08;
    double total = price + price * taxRate;

    printf("price=%.2f\n", price);
    printf("total=%.2f\n", total);
    return 0;
}

double `double` is the usual C type for fractional numeric work.

format `%.2f` prints a floating-point value with two digits after the decimal point.