#include <stdio.h>
// 引数 n が偶数かどうかを判定する関数(偶数なら1、奇数なら0を返す)
int evenNumber(int n) {
int x;
x = 1;
if (n % 2 == 1) {
x = 0;
}
return x;
}
int main(void) {
int a = 20;
int b;
b = evenNumber(a);
printf("%dは偶数かどうか:%d\n", a
, b
);
return 0;
}
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