C program for "A five digit number is entered through the keyboard. write a program to obtain the reversed number and to determine whether the original and reversed number are qual or not."

Problem:  C program for "A five digit number is entered through the keyboard. write a program to obtain the reversed number and to determine whether the original and reversed number are equal or not."

Logic used :

• take the number and assign it to a variable
• check while number is not equal to zero
• take the remainder out using modulus operator by 10
• store it in a variable
• use formulae rev = rev*10+ramainder to reverse the number
• take the quotient out by diving the number by 10
• store result in number variable itself
• repeat step 2 to 7 until the number becomes zero
• now check if the reversed number is same as taken number
• print the result

Demo :

while(num!=0){

        remainder = num%10;

        rev = rev*10+remainder;

        num=num/10;

    }

C program :

// Program by Shyam sunder kanth

#include<stdio.h>

int main(){

    int num, rev=0, remainder;

    printf("Enter the 5 digit number: ");

    scanf("%d",&num);

    while(num!=0){

        remainder = num%10;

        rev = rev*10+remainder;

        num=num/10;

    }

    printf("The reversed number is %d.\n",rev);

    if(num==rev){

        printf("Both number is same.");

    }else{

        printf("Both number is not same.");

    }

    return 0;

}

Codes used:

• #include<stdio.h> : Header file
• int : Integer data type
• num, rev, remainder : Variable used
• printf : Function for displaying messages
• scanf : Function for taking input
• while : Loop
• if-else : Conditional statement

Do comments, if any doubt

Know about me : Shyam Kanth