Example: Calculate Mass and Weight from Density and Volume in C

// Calculate Mass and Weight from Density and Volume
#include <stdio.h>

#define GRAVITY_EARTH 9.81 // Acceleration due to gravity on Earth in m/s^2

int main() {
    float density; // Density in kg/m^3
    float volume;  // Volume in m^3
    float mass;
    float weight;

    // Step 1: Prompt user for density input
    printf("Please enter the object's density in kilograms per cubic meter (kg/m^3): ");
    if (scanf("%f", &density) != 1 || density < 0) {
        printf("Invalid input. Please enter a non-negative number for density.\n");
        return 1;
    }

    // Step 2: Prompt user for volume input
    printf("Please enter the object's volume in cubic meters (m^3): ");
    if (scanf("%f", &volume) != 1 || volume < 0) {
        printf("Invalid input. Please enter a non-negative number for volume.\n");
        return 1;
    }

    // Step 3: Calculate mass using the formula m = rho * V
    mass = density * volume;

    // Step 4: Calculate weight using the formula W = m * g
    weight = mass * GRAVITY_EARTH;

    // Step 5: Display the calculated density, volume, mass, and weight
    printf("\nObject Properties:\n");
    printf("  Density: %.2f kg/m^3\n", density);
    printf("  Volume:  %.2f m^3\n", volume);
    printf("  Mass:    %.2f kg\n", mass);
    printf("  Weight on Earth: %.2f N\n", weight);

    return 0;
}