#include <stdio.h>
int max(int x, int y);
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;
}
int max(int x, int y){
if (x > y) {
return x;
} else {
return y;
}
}
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