C program to reverse a number using loops

C program to reverse a number using loops

In this article, we will discuss the concept of the C program to reverse a number using loops

In this post, we are going to learn how to find reverse number of the given number in C programming language

C  code to reverse a number using for loop

Program 1

The program allows  the user to enter a number and it displays the reverse pattern of the given number using for loop in C language

when you are entered 45678,
The output will be displayed as 87654

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

int main()
{
    int num,rem,reverse=0;
    printf("Enter a number for find reverse\n");
    scanf("%d",&num);
    printf("You entered %d\n",num);
    for(;num!=0; num=num/10){
        rem=num%10;
        reverse=reverse*10+rem;
    }
    printf("Reverse of the given number %d",reverse);
    getch();
    return 0;
}

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

Explanation

• Declare and initialize three variables as follows  int num,rem,reversed_Num=0;
• The user is asked to enter a number and it is stored in the integer variable of ‘num‘
• The for loop is used to find the reversed number of the given number
• The for loop is functioning until ‘ num’ is not equal to zero
• Finally, the output is displayed as the reversed number

 

C  code to reverse a number using while loop

Program 2

The program allows  the user to enter a number and it displays the reverse pattern of the given number using while loop in C language

when you are entered 13579,
The output will be displayed as 97531

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

int main()
{
    int num,reverse=0,rem;
    printf("Enter a number for find reverse\n");
    scanf("%d",&num);
    printf("You entered %d\n",num);
    while(num!=0){
        rem=num%10;
        reverse=reverse*10+rem;
        num/=10;
    }

    printf("Reverse number %d\n",reverse);
    getch();
    return 0;
}

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

 

Explanation

• Declare and initialize three variables as follows int num,rem,reversed_Num=0;
• The user is asked to enter a number and it is stored in the integer variable of ‘num‘
• The while loop is used to find the reversed number of the given number
• The while loop is functioning until ‘ num‘ is not equal to zero
• Finally, the output is displayed as the reversed number

 

C  code to reverse a number using do-while loop

Program 3

The program allows  the user to enter a number and it displays the reverse pattern of the given number using do-while loop in C language

when you are entered 54321
The output will be displayed as 12345

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

int main()
{
    int num,reverse=0,rem;
    printf("Enter a number for find reverse\n");
    scanf("%d",&num);
    printf("You entered %d\n",num);
    do{
        rem=num%10;
        reverse=reverse*10+rem;
        num/=10;
    }while(num!=0);

    printf("Reverse number %d\n",reverse);
    getch();
    return 0;
}

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

 

Explanation

• Declare and initialize three variables as follows int num,rem,reversed_Num=0;
• The user is asked to enter a number and it is stored in the integer variable of ‘num‘
• The do-while loop is used to find the reversed number of the given number
• The do-while loop is functioning until ‘ num‘ is not equal to zero
• Finally, the output is displayed as the reversed number

Suggested for you

For loop in C language

While loop in C language

Do while loop in C language

 

Similar post

Reversed string in Java language

Reversed string in C language

Reversed string in C++ language

C++ program to reverse a number using loops

Java program to reverse a number using loops