• On March 19, 2019
• By Karmehavannan
• 0 Comment
• Categories: Find elements
• Tags: C examples, C language, operator

C program:find smallest of three numbers using function

C program:find smallest of three numbers using function

In this tutorial, we will discuss the concept of the C program:find smallest of three numbers using function 

In this post, we will learn how to find the smallest number among three numbers using a user-defined function in the C programming language

In my previous post, I have explained the various approaches to find the smallest number of among  three numbers in C language

However, in this program, we embed the logic of the “find the smallest of three number” program in the function.

Here, I have explained how to find the smallest number from the given three number and how to embed this logic in the function.

Program 1

Find the smallest of three numbers using Nested if statements

This program allows the user to enter three numbers and compare to select the smallest number using nested if  statements

#include <stdio.h>
#include <stdlib.h>
int biggestNum(int, int,int);//function prototype
int main()
{
    int num1,num2,num3; //declare the variables
    printf("Enter the first number:  ");
    scanf("%d",&num1);//get input from user for num1
    printf("Enter the second number: ");
    scanf("%d",&num2);//get input from user for num2
    printf("Enter the third number: ");
    scanf("%d",&num3);//get input from user for num3

//function call
    biggestNum(num1,num2,num3);
    getch();
    return 0;
}

    int biggestNum(int num1,int num2,int num3){//function definition
    if(num1<num2){//compare num1 and num2
            if(num1<num3){//compare num1 and num3
         printf("\nSmallest number is: %d\n",num1);
            }
            else{
                printf("\nSmallest number is: %d\n",num3);
            }
    }
    else{
        if(num2<num3){//compare num2 and num1
            printf("\nSmallest number is: %d\n",num2);
        }
        else{
            printf("\nSmallest number is: %d\n",num3);
        }

    }
    }

When the above code is executed, it produces the following results

Enter the first number: 67
Enter the second number: 98
Enter the third number: 34

Smallest number is: 34

Program 2

Find the smallest of three numbers using if else if statements

This program allows the user to enter three numbers and compare to select the smallest number using if-else-if  statements

#include <stdio.h>
#include <stdlib.h>

int biggestNum(int, int,int);//function prototype
int main()
{
    int num1,num2,num3; //declare the variables
    printf("Enter the first number:  ");
    scanf("%d",&num1);//get input from user for num1
    printf("Enter the second number: ");
     scanf("%d",&num2);//get input from user for num2
    printf("Enter the third number: ");
     scanf("%d",&num3);//get input from user for num3

//function call
    biggestNum(num1,num2,num3);
    getch();
    return 0;
}

    int biggestNum(int num1,int num2,int num3){//function definition
    if(num1<num2&&num1<num3){
         printf("\nSmallest number is:%d",num1);
            }
    else if(num2<num3){//compare num2 and num1
            printf("\nSmallest number is:%d",num2);
        }
        else{
            printf("\nSmallest number is:%d",num3);
        }

    }

When the above code is executed, it produces the following results

Enter the first number: 67
Enter the second number:23
Enter the third number: 57

Smallest number is:23

Smiler post

C++ program to find the smallest  among three numbers using the function

Python code to find the smallest of three numbers using the function

Java code to find the smallest of three numbers using the method

Suggested for you

Operator in C language

If statements in C language

Nested if statements in C language

Function in C language

Data types in C

variables in C