Multiply Two Floating-Point Numbers

In this example, the product of two floating-point numbers entered by the user is calculated and printed on the screen.

Program to Multiply Two Numbers

    #include <stdio.h>
    int main() {
        double a, b, product;
        printf("Enter two numbers: ");
        scanf("%lf %lf", &a, &b);  
     
        // Calculating product
        product = a * b;
    
        // Result up to 2 decimal point is displayed using %.2lf
        printf("Product = %.2lf", product);
        
        return 0;
    }


                                    

Output

    Enter two numbers: 2.4
    1.12
    Product = 2.69

Explanation

In this program, the user is asked to enter two numbers which are stored in variables a and b respectively.

    printf("Enter two numbers: ");
    scanf("%lf %lf", &a, &b);

Then, the product of a and b is evaluated and the result is stored in product.


    product = a * b;

Finally, product is displayed on the screen using printf().


    printf("Product = %.2lf", product);

Notice that, the result is rounded off to the second decimal place using %.2lf conversion character.