C program to calculate body mass index (BMI)

Given a person's weight and height, the task is to find his BMI or body mass index and display it.

Calculating body mass index requires two things:

• Weight
• Height

You can use the following formula to calculate BMI:

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

Where the weight is in kilograms and the 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

The method used below is as follows −

• Enter weight (kg) and height (meters) in floating point variables
• Apply the formula to calculate body mass index
• Print out 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

Example demonstration

#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 will generate the following output

BMI index is : 23.53

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