#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,int);
//main関数
int main(void) {
int a,b,c,d;
//ここ↓を埋めてね2
a=1;
b=5;
c=7;
d=4;
printf("%d",max
(max
(c
,d
),max
(a
,b
))); return 0;
}
//max関数の定義
int max(int x, int y){
//ここ↓を埋めてね3
int n;
n=x;
if(x<y){
n=y;
}
return n;
}
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