#include <stdio.h>
int max(int x, int y);
int main(void) {
int a=1, b=5, c=3, d=4;
int ans;
printf("%d,%d,%d,%dの最大値は%d",a
,b
,c
,d
,ans
); ans=max(max(a,b), max(c,d));
return 0;
}
int max(int x, int y){
return (x>y)?x:y;
}
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