Question

rite a function, reverseDigit, that takes an integer as a parameter and returns the number with its digits reversed. For example: the value of reverseDigit(12345) is 54321; the value of reverseDigit(5600) is 65; the value of reverseDigit(7008) is 8007; and the value of reverseDigit(–532) is –235.

Answer 1

following are the code in c language

#include<stdio.h> // header file

int reverseDigit(int n); // prototype of reverseDigit function

int main() // main method

{

int n; // variable declaration

printf("Enter a number to reverse\\");

scanf("%d", &n); // input value by user

int t=reverseDigit(n); // calling reverseDigit function

printf("the value of reverseDigit(%d)",n);

printf(" is %d",t); // display reverse digit

return 0;

}

int reverseDigit(int n) // function definition of reverseDigit function

{

int r=0;

while(n!=0) // iterating over the loop

{

r = r* 10;

r= r+ n%10;

n= n/10;

}

return(r); // return the reverse digit

}

Step-by-step explanation:

In this we call a function reverseDigit, from the main function after calling control moves to the definition of reverseDigit, function ,the while loop is iterating .In the while loop, we find the remainder r when number is divided by 10 then it will multiplied by 10 and add previous remainder after that number will be updated as n/10 . Then function will return number r and print them in main function.

output

Enter a number to reverse

12345

the value of reverseDigit(12345) is 54321