C Program to Multiply two floating-point numbers

In this example, you will learn how to multiply two floating-point numbers by taking input from the user and display the results on the screen.

You can learn more C Programming concepts here.

C Program to Multiply two floating-point numbers

#include <stdio.h>
int main() {
    double numberOne, numberTwo, product;
    printf("Enter two numbers: ");
    scanf("%lf %lf", &numberOne, &numberTwo);  
    // Calculating product
    product = numberOne * numberTwo;

    // %.3lf displays number up to 3 decimal point
    printf("Product = %.3lf", product);
    
    return 0;
}

Output

Enter two numbers: 5.5 1.3
Product = 7.150

Program Explanation

In this example, the user is asked to enter two floating-point numbers. The two numbers entered by the user will be stored in numberOne and numberTwo respectively.

printf("Enter two numbers: ");
scanf("%lf %lf", &numberOne, &numberTwo);

Then the numberOne and numberTwo are multiplied using the * operator and the result is stored in product.

product = numberOne * numberTwo;

product variable is of type double, which is capable of storing value till 15 decimals. Here in this example, we can display the output restricting to 3 decimals using %.3lf (.3 represents 3 decimals after the point).

printf("Product = %.3lf", product);