#include <stdio.h>
#include <stdarg.h>
int max(int count, ...){
va_list nums;
if(count < 1) return -1;
for(int i=1;i<count;i++){
if(_max < tmp){
_max=tmp;
}
}
return _max;
}
int main(void) {
printf("%d\n", max
(3, 9, 1, 5)); return 0;
}
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