Program uses nested if...else statement to find the largest

// Program uses nested if...else statement to find the largest number among three
#include <stdio.h>
void main()
{
    double n1, n2, n3;

    printf("Enter three numbers: ");
    scanf("%lf %lf %lf", &n1, &n2, &n3);                //coded by Suman Maji,EIEM,Salboni
    if( n1>=n2 && n1>=n3)
        printf("%.2lf is the largest number.", n1);
    else if (n2>=n1 && n2>=n3)
        printf("%.2lf is the largest number.", n2);
    else
        printf("%.2lf is the largest number.", n3);

}