Simplified Version Big Data Addition

# Include <iostream>
# Include <cstring>
# Define l 1000000000
Class bignum {
PRIVATE:
Int num [101], Len;
Public:
Bignum () {num [0] = 0; Len = 0 ;}
Friend bignum operator + (bignum A, bignum B ){
Int I, L1 = A. Len, L2 = B. Len;
Bignum temp;
For (I = 0; I <L1 | I <L2; I ++ ){
If (I> = L1) temp. Num [I] + = B. Num [I];
Else if (I> = l2) temp. Num [I] + = A. Num [I];
Else temp. Num [I] + = A. Num [I] + B. Num [I];
If (temp. Num [I]> = L ){
Temp. Num [I + 1] = 1;
Temp. Num [I] % = L;
} Else temp. Num [I + 1] = 0;
}
Temp. Len = I + temp. Num [I];
Return temp;
}
Void operator = (int x ){
Num [0] = X;
Len = 1;
}
Bool operator = (int x ){
If (LEN> 1) return 0;
Return num [0] = X;
}
Int CMP (bignum ){
If (A. Len! = Len ){
If (LEN> A. Len) return 1;
Return-1;
}
Int I, S = Len;
For (I = s-1; I> = 0; I --){
If (Num [I]> A. Num [I]) return 1;
If (Num [I] <A. Num [I]) Return-1;
}
Return 0;
}
Void print (){
Int I;
Printf ("% d", num [Len-1]);
For (I = Len-2; I> = 0; I --){
Printf ("% 09d", num [I]);
}
Printf ("/N ");
}
Void get (){
Char STR [101];
Int o = 0, S, ten = 1;
Len = 0;
Scanf ("% s", STR );
S = strlen (STR );
While (s --){
O + = (STR [s]-48) * ten;
Ten * = 10;
If (ten = 1e9 | S = 0 ){
Num [Len] = O;
Len ++;
O = 0; Ten = 1;
}
}
}
};