UV 11743-credit check

Question: Determine whether the card number is valid. Give you four groups of four digits, two times the digits of the even number and the sum of the odd digits to determine whether the ending number is 0.

Analysis: simple question and simulation. You just need to judge based on the proposal.

Note: Question 460, come on!

# Include <iostream> # include <cstdlib> using namespace STD; char data [4] [5]; int main () {int N; while (CIN> N) for (INT I = 1; I <= N; ++ I) {for (INT I = 0; I <4; ++ I) CIN> data [I]; int D = 0, u = 0, T = 0; For (INT I = 0; I <4; ++ I) {T = (data [I] [0]-'0') * 2; D + = (T/10 + T % 10 ); U + = (data [I] [1]-'0'); t = (data [I] [2]-'0') * 2; d + = (T/10 + T % 10); U + = (data [I] [3]-'0');} If (D + U) % 10) cout <"invalid" <Endl; else cout <"valid" <Endl;} return 0 ;}

UV 11743-credit check