# Input 2 decimal numbers and find the floor value of their sum using mathematical functions in C

###### Mathematical Functions - Question 4

In this question, we will see how to input 2 decimal numbers and find the floor value of the sum of the numbers in C programming using the mathematical functions. To know more about mathematical functions click on the mathematical functions lesson.

**Q4)** Write a program in C to input 2 decimal numbers and find the floor value of the sum of the numbers.

#### Program

```
#include <stdio.h>
#include <conio.h>
#include <math.h>
int main()
{
float a,b,s;
int x;
printf("Enter 2 decimal numbers\n");
scanf("%f%f",&a,&b);
s=a+b;
x=floor(s);
printf("Floor value of sum = %d",x);
return 0;
}
```

#### Output

Enter 2 decimal numbers 12.36 8.47 Floor value of sum = 20