CPP examples programs

CPP program to print fibonacci series
CPP program to check prime number
CPP program to check for a Palindrome number
CPP program to print factorial of a number
CPP program to check for an Armstrong number
CPP program to print sum of digits
CPP program to reverse a number
CPP program to swap two numbers
CPP program to print Matrix Multiplication
CPP program to convert a decimal number into a binary number
CPP program to print Numbers in form of Characters
CPP program to print Alphabet Triangle
CPP program to print Number Triangle
CPP program to print Fibonacci Triangle

CPP program to reverse a number

The below program can be used to reverse a given number using a loop. The CPP cout object is used to output the result on the screen.

Reverse Number of abcde = edcba.

Code:

#include <iostream.h>
using namespace std;
 
int main()  
{  
int num, x = 0;
int mod;
 
cout << "Enter a number: ";  
cin >> num;  
 
int n = num;
 
while(num != 0)
{  
mod = num%10;
x = x * 10 + mod;  
num = num/10;
}  
 
cout << "Reverse of " << n << " = " << x;  
return 0;
}

Output

Enter a number: 7654321       
Reverse of 7654321 = 1234567