#include <stdio.h>
void swap(int *x,int *y);
void sort(int *x, int *y);
int main(void) {
int x;
int y;
sort(&x ,&y);
return 0;
}
void swap(int *x,int *y){
int w;
w = *x;
*x = *y;
*y = w;
}
void sort(int *x,int *y){
if(y>x){
swap(x,y);
}
}
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