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