Skip to main content

C Program to Find the Largest Number Among Three Numbers

C Program to Find the Largest Number Among Three Numbers

In this example, the largest number among three numbers (entered by the user) is found using three different methods.
 
Large number among 3 numbers using if...else statement
To understand this example, you should have the knowledge of following C programming topics:
This program uses only if statement to find the largest number.

Example #1

#include <stdio.h>
int main()
{
    double n1, n2, n3;

    printf("Enter three different numbers: ");
    scanf("%lf %lf %lf", &n1, &n2, &n3);

    if( n1>=n2 && n1>=n3 )
        printf("%.2f is the largest number.", n1);

    if( n2>=n1 && n2>=n3 )
        printf("%.2f is the largest number.", n2);

    if( n3>=n1 && n3>=n2 )
        printf("%.2f is the largest number.", n3);

    return 0;
}
This program uses if...else statement to find the largest number.

Example #2

#include <stdio.h>
int main()
{
    double n1, n2, n3;

    printf("Enter three numbers: ");
    scanf("%lf %lf %lf", &n1, &n2, &n3);

    if (n1>=n2)
    {
        if(n1>=n3)
            printf("%.2lf is the largest number.", n1);
        else
            printf("%.2lf is the largest number.", n3);
    }
    else
    {
        if(n2>=n3)
            printf("%.2lf is the largest number.", n2);
        else
            printf("%.2lf is the largest number.",n3);
    }
    
    return 0;
}
This program uses nested if...else statement to find the largest number.

Example #3

#include <stdio.h>
int main()
{
    double n1, n2, n3;

    printf("Enter three numbers: ");
    scanf("%lf %lf %lf", &n1, &n2, &n3);

    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);

    return 0;
}
Though, the largest number among three numbers is found using multiple ways, the output of all these program will be same.
Enter three numbers: -4.5
3.9
5.6
5.60 is the largest number.

Comments

Post a Comment

Popular posts from this blog

C Program to Find all Roots of a Quadratic Equation

C Program to Find all Roots of a Quadratic Equation This program accepts coefficients of a quadratic equation from the user and displays the roots (both real and complex roots depending upon the discriminant ).   To understand this example, you should have the knowledge of following C programming topics: C Programming Operators C if...else Statement The standard form of a quadratic equation is: ax 2 + bx + c = 0, where a, b and c are real numbers and a ≠ 0 The term b 2 -4ac is known as the discriminant of a quadratic equation. The discriminant tells the nature of the roots. If discriminant is greater than 0, the roots are real and different. If discriminant is equal to 0, the roots are real and equal. If discriminant is less than 0, the roots are complex and different. Example: Program to Find Roots of a Quadratic Equation #include <stdio.h> #include <math.h> int main () ...
Post a Comment
Read more

C Program to Check Whether a Number is Positive or Negative

C Program to Check Whether a Number is Positive or Negative In this example, you will learn to check whether a number (entered by the user) is negative or positive.    To understand this example, you should have the knowledge of following C programming topics: C Programming Operators C if...else Statement This program takes a number from the user and checks whether that number is either positive or negative or zero. Example #1: Check if a Number is Positive or Negative Using if...else #include <stdio.h> int main () { double number ; printf ( "Enter a number: " ); scanf ( "%lf" , & number ); if ( number <= 0.0 ) { if ( number == 0.0 ) printf ( "You entered 0." ); else printf ( "You entered a negative number." ); } else printf ( "You entered a positive num...
Post a Comment
Read more

C Program to Print an Integer (Entered by the User)

C Program to Print an Integer (Entered by the User) In this program, integer entered by the user is stored in a variable. Then, that variable is displayed on the screen using printf() function.   To understand this example, you should have the knowledge of following C programming topics: C Programming Constants and Variables C Programming Data Types C Input Output (I/O) Program to Print an Integer #include <stdio.h> int main () { int number ; // printf() dislpays the formatted output printf ( "Enter an integer: " ); // scanf() reads the formatted input and stores them scanf ( "%d" , & number ); // printf() displays the formatted output printf ( "You entered: %d" , number ); return 0 ; } Output Enter a integer: 25 You entered: 25 In this program, an integer variable  number is declared. ...
Post a Comment
Read more