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C program to Find Smallest of three numbers
In this article, we will discuss the concept of C program to Find Smallest of three numbers
In this post, we are going to learn how to write a program to find smallest number out of three numbers using different methods in C program.
Program to find smallest numbers
Code to find smallest numbers using if statements
In this code, we will find smallest number out of three numbers using if statements in C language
Program 1
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1,num2,num3; //declare the variables
printf("Enter three numbers: ");
//Ask input from the user
scanf("%d %d %d",&num1,&num2,&num3);
//Reading the three input from user for numbers
if(num1<=num2 && num1<=num3){
//compare num1 with num2 and num3
printf("\n The smallest number is: %d ",num1);
}
if(num2<=num1 && num2<=num3){
//compare num2 with num1 and num3
printf("\n The smallest number is: %d ",num2);
}
if(num3<=num1 && num3<=num2){
//compare num3 with num1 and num2
printf("\n The Smallest number is: %d ",num3);
}
getch();
return 0;
}
When the above code is executed, it produces the following result
Enter three numbers: 200 100 300 The smallest number is :100
Code to find smallest numbers using if else-if statements
In this code, we will find smallest number out of three numbers using if else-if statements in C language
Program 2
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1,num2,num3;//variable declaration
printf("Enter three numbers\n");
scanf("%d %d %d",&num1,&num2,&num3);
//Takes three input for num1,num2,num3
if(num1<num2 && num1<num3){
//check whether num1 is smaller than num2 and num3
printf("\n%d is smallest",num1);
}//if it is true this statement is displayed
else if(num2<num3){
//then check num2 or num3 is small
printf("\n%d is smallest",num2);//when it is true this statements is displayed
}
else{
printf("\n%d is smallest",num3);
}//all statements are false this statement is displayed
getch();
return 0;
}
When the above code is executed, it produces the following result
Enter three numbers 45 67 87 45 is smallest
Code to find smallest numbers using Nested if statements
In this code, we will find smallest number out of three numbers using Nested-if statements in C language
Program 3
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1,num2,num3; //declare the variables
printf("Enter three numbers: ");
//Ask input from the user
scanf("%d %d %d",&num1,&num2,&num3);//Reading the input from user for numbers
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);
}
}
getch();
return 0;
}
When the above code is executed, it produces the following result
Enter three numbers: 23 89 65 Smallest number is 23
Code to find smallest numbers using ternary operator
In this code, we will find smallest number out of three numbers using ternary operator in C language
Program 4
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1,num2,num3; //declare the variables
printf("Enter three numbers: ");
//Ask input from the user
scanf("%d %d %d",&num1,&num2,&num3);
//Reading the input from user for numbers
int result=num3<(num1<num2?num1:num2)?num3:((num1<num2)? num1:num2);
printf("\n The Smallest number is: %d ",result);
getch();
return 0;
}
When the above code is executed, it produces the following result
Enter three numbers: 78 54 32 Smallest number is 32
Program 5
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1,num2,num3; //declare the variables
printf("Enter three numbers: ");
//Ask input from the user
scanf("%d %d %d",&num1,&num2,&num3);
//Reading the input from user for numbers
int temp=((num1<num2)? num1:num2);
int result=num3<temp?num3:temp;
printf("\n The Smallest number is: %d ",result);
getch();
return 0;
}
When the above code is executed, it produces the following result
Enter three numbers: 999 777 888 Smallest number is 777
Code to find smallest numbers using function
In this code, we will find smallest number out of three numbers using function in C language
Program 6
#include <stdio.h>
#include <stdlib.h>
int smallestNum(int, int,int);//function prototype
int main()
{
int num1,num2,num3; //declare the variables
printf("Enter three numbers: ");
//Ask input from the user
scanf("%d %d %d",&num1,&num2,&num3);//Reading the input from user for numbers
smallestNum(num1,num2,num3);//Calling the function
getch();
return 0;
}
int smallestNum(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 result
Enter three numbers: 321 543 765 Smallest number is 321
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Nested if statement in C language
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