User Defined Function

Write a C++ program to reverse a number using a user defined function.

Implementation of the above problem in C++:

#include<iostream>

#include<math.h>

using namespace std;

void reverse(int n)

{

int a;

cout<<"\nReverse output without return type is = ";

while(n!=0)

{

a=n%10;

cout<<a;

n=n/10;

}

}

int reverse1(int n)

{

int a,c=0,x,z,b[100],i=0;

while(n!=0)

{

b[i]=n%10;

i++;

x=i;

n=n/10;

}

int y=x-1;

for(i=0; i<=x-1;i++)

{

z=b[i]*pow(10,y);

c=c+z;

y--;

}

return c;

}

int main()

{

int n;

cout<<"\nEnter the number to be reversed \n";

cin>>n;

reverse(n);

cout<<"\nReverse output with return type is = "<<reverse1(n);

return 0;

}

The output of the above program is tested on www.jdoodle.com

Output:

Enter the number to be reversed 

234

Reverse output without return type is = 432

Reverse output with return type is = 432

Thanks

Mukesh Rajput