#include <stdio.h>
//関数のプロトタイプ宣言
//ここ↓を埋めてね1
int max(int x,int y);
//main関数
int main(void) {
int a,b,c,d;
//ここ↓を埋めてね2
a=2;
b=7;
c=5;
d=4;
int maximum=max(max(a,b),max(c,d));
return 0;
}
//max関数の定義
int max(int x, int y){
//ここ↓を埋めてね3
if(x>y)return x;
else return y;
}
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