#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
int m;
a=1;
b=5;
c=3;
d=4;
m= max(max(a,b),max(d,c));
printf("%dと%dと%dと%dのうち最大値は%d",a
,b
,c
,d
,m
); return 0;
}
//max関数の定義
int max(int x, int y){
//ここ↓を埋めてね3
return (x>y)? x:y;
}
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