Calculate Body Mass Index in C

Question

I’m doing a simple C-program to calculate body mass index. However, it is returning a different value (wrong) than a common calculator.

#include <stdio.h>

int main() {
    float height, weight, imc;

    printf("Hello World!\nWhat's your height?");
    scanf("%f", &height);

    printf("What's your weight?");
    scanf("%f", &weight);

    imc = height / (weight * height);
    printf("%f", imc);

    getch();
    return 0;
}

Expression: Height / weight²

Answer 1

    #include <stdio.h>
    #include <conio.h>

    int main() {
    float height, weight, imc;

    printf("Hello World!\nWhat's your height?");
    scanf("%f", &height);

    printf("What's your weight?");
    scanf("%f", &weight);

    imc = weight / (height * height);
    printf("%f", imc);

    getch();
    return 0;


}

If you want to put the getch() function, you have to include the library #include <conio.h> getch(); is not part of the standard language

Answer 2

You’re making imc = height / (weight * height); i.e., height / (weight * height). It should be imc = height / (weight * weight);