#include <stdio.h>
//関数のプロトタイプ宣言
int max(int x, int y);
//main関数
int main(void) {
int a,b,c,d;
a=1;
b=5;
c=3;
d=4;
printf("%d\n", max
(max
(a
,b
), max
(c
,d
)));
return 0;
}
//max関数の定義
int max(int x, int y){
return(x>y)?x:y;
}
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