Check if a + b = c is valid after removing all zeroes from a, b and c in C++

Suppose we have three numbers a, b, c, we have to check whether a + b = c, after removing all 0s from the numbers or not. Suppose the numbers are a = 102, b = 130, c = 2005, then after removing 0s, the numbers will be a + b = c : (12 + 13 = 25) this is true

We will remove all 0s from a number, then we will check after removing 0s, a + b = c or not.

Example

 Live Demo

#include <iostream>
#include <algorithm>
using namespace std;
int deleteZeros(int n) {
   int res = 0;
   int place = 1;
   while (n > 0) {
      if (n % 10 != 0) { //if the last digit is not 0
         res += (n % 10) * place;
         place *= 10;
      }
      n /= 10;
   }
   return res;
}
bool isSame(int a, int b, int c){
   if(deleteZeros(a) + deleteZeros(b) == deleteZeros(c))
      return true;
   return false;
}
int main() {
   int a = 102, b = 130, c = 2005;
   if(isSame(a, b, c))
      cout << "a + b = c is maintained";
   else
      cout << "a + b = c is not maintained";
}

Output

a + b = c is maintained

Arnab Chakraborty

e

Updated on: 21-Oct-2019

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