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#include <stdio.h>
void swap(int *x, int *y){
int temp = *x;
*x = *y;
*y = temp;
}
int main(){
int x = 10;
int y = 11;
printf("Values before swap: x = %d, y = %d\n", x,y);
swap(&x,&y);
printf("Values after swap: x = %d, y = %d", x,y);
}