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Thx a lot, i will try using these compiler

[cpp]#include <iostream>
using namespace std;
struct Number
{
char Carry, charShow;
};
Number add(char, char, char);

void main()
{
int NumInputed = 0, i, lengthSum = 0, lengthInput = 0;
char curr, *Input, *Sum, PreCarry = '0';
bool invalid;

Number PreNumber;


Sum = new char;
Input = new ...