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