파이값 계산기(Gregory-Leibniz무한 수열)

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
int x, y, answer, i;
int correct, wrong;
srand((unsigned)time(NULL));
correct = 0;
wrong = 0;

for (i = 0; i < 10; i++) {
x = rand() % 10;
y = rand() % 10;
printf("%d + %d = ", x, y);
scanf("%d", &answer);

if (x + y == answer) {
printf("정답입니다.\n");
correct += 1;
}
if (x + y != answer) {
printf("오답입니다.\n");
wrong += 1;
}
}

printf("정답횟수: %d\n", correct);
printf("오답횟수: %d\n", wrong);
return 0;
}