How to write a C Program to multiply two floating point numbers

How to write a C Program to multiply two floating point numbers

In this article, we will discuss the concept of How to write a C Program to multiply two floating point numbers

In this post, we are going to learn how to write a program to calculate product of two floating point numbers using different methods in C programming language.

Code to calculate product of two floats

Code to calculate product of two floating point numbers

In this program, we will calculate product of two floating point numbers using variable declaration and initialization in C language

Program 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("calculate Product of two floating point value\n");
   float first_No=12.5,last_No=5.5,product;
   //declaring and initializing variables

product=first_No * last_No;
//multiply given two numbers and assgn the result in variable product

printf("Product is : = %.3f",product);
//display result up to 3 decimal places
getch();
    return 0;
}

When the above code is executed, it produces the following result

calculate Product of two floating point value
Product is: = 68.750

 

 

Code to calculate product of two floating point numbers – using user input

In this program, we will calculate product of two floating point numbers using input from the user in C language

Program 2

#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("calculate Product of two floating point value\n");
   float first_No,last_No,product;
   //declaring three variables
    printf("Enter first number: ");
    //request input from the user
    scanf("%f",&first_No);
    //store the floating point value in variable first_No
    printf("Enter last number: ");
    //request input from the user
    scanf("%f",&last_No);
    //store the floating point value in variable last_No

product=first_No * last_No;
//multiply given two numbers and store the result in variable product

printf("Product is : = %.3f",product);
//display result up to 3 decimal places
getch();
    return 0;
}

When the above code is executed, it produces the following result

calculate Product of two floating point value
Enter first number: 10.6
Enter last number: 5.1
Product is: = 53.550

 

Code to calculate product of two floating point numbers using function

In this program, we will calculate product of two floating point numbers using function in C language

Program 3

#include <stdio.h>
#include <stdlib.h>
float mulNum(float,float);
int main()
{
    printf("find Product of floating point value\n");
   float f_No=50.5,s_No=25.6,product;
   //declaring and initializing variables
    product=mulNum(f_No,s_No);
    //calling the function and assigning the output to product variable
    printf("Product is : = %.3f",product);
//display result up to 3 decimal places
getch();
    return 0;
}
    float mulNum(float a, float b){//function definition
float result=a * b;
//multiply two numbers and store the output in variable result
return result;
//return the result to main method
    }

When the above code is executed, it produces the following result

Find Product of two floating point value
Product is: = 1292.800

 

Code to calculate product of two floating point numbers using function with user input

In this program, we will calculate product of two floating point numbers using function with user input in C language

Program 4

#include <stdio.h>
#include <stdlib.h>
float mulNum(float,float);
int main()
{
    printf("find Product of floating point value\n");
   float f_No,s_No,product;
    printf("Enter first number: ");
    //ask input from the user
    scanf("%f",&f_No);
    //storing the input value in variable f_No
    printf("Enter second number: ");
    //ask input from the user
    scanf("%f",&s_No);
    //storing the input value in variable s_No
    product=mulNum(f_No,s_No);
    //calling the function and assigning the output to product variable
    printf("Product is : = %.3f",product);
//display result up to 3 decimal places
getch();
    return 0;
}
    float mulNum(float a, float b){//function definition
float result=a * b;
//multiply two numbers and store the output in variable result
return result;
//return the result to main method
    }

When the above code is executed, it produces the following result

Find Product of two floating point value
Enter first number: 10.6
Enter last number: 5.1
Product is: = 53.550

 

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