A + B

#include <stdio.h>
#include <cstdlib>
#include <iostream>

int main(){

	//get input

	char input[16];

	std::cin >> input;

	//find the blank space and the end of input

	int k = 0;
	int m = 0;

	while (input[k] != ' '){ 
		k++;
		//index of the blank space
	}

	while (input[m] != '\0'){
		m++;
		//index of the last digit 
	}

	//seperate input into 2 parts

	char a [k];
	char b [m-k-1];

	for (int i=0; i<k ; i++){
		a[i]= input[i];
	}

	for (int j=0; j<m-k-1 ; j++){
		b[j]= input[j+k+1];
	}

	//turn char array to int (use atoi)

	int no_a = atoi(a);
	int no_b = atoi(b);

	//add them up and print

	printf("%d" , no_a + no_b);


}

/*
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

- 5 7 8 9   8 1 2 3 4  5
          k               m  

k=5
m=12

a= input[ 0 ~ k-1]
b= input[ k+1 ~ m-1]

size a = k
size b = m-k-1
*/

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER