# C program to Calculate Body Mass Index (BMI)

Given with the weight and height of a person and the task is to find the BMI i.e. body mass index of his body and display it.

For calculating the body mass index we require two things −

• Weight
• Height

BMI can be calculated using the formula given below −

BMI = (mass or weight) / (height*height)

Where weight is in kg and height is in meters

## Example

Input 1-: weight = 60.00
Height = 5.1
Output -: BMI index is : 23.53
Input 2-: weight = 54.00
Height = 5.4
Output -: BMI index is : 9.3

Approach used below is as follows

• Input weight(kg) and height(meter) in float variables
• Apply the formula to compute the body mass index
• Print the BMI

## Algorithm

Start
Step 1-> Declare function to calculate BMI
float BMI(float weight, float height)
return weight/height*2
step 2-> In main()
Set float weight=60.00
Set float height=5.1
Set float bmi = BMI(weight,height)
Print BMI
Stop

## Example

Live Demo

#include<stdio.h>
//function to calculate BMI index
float BMI(float weight, float height) {
return weight/height*2;
}
int main() {
float weight=60.00;
float height=5.1;
float bmi = BMI(weight,height);
printf("BMI index is : %.2f ",bmi);
return 0;
}

## Output

IF WE RUN THE ABOVE CODE IT WILL GENERATE FOLLOWING OUTPUT

BMI index is : 23.53