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#include <stdio.h>
void swap(int *x, int *y) {
    int temp = *x;
    *x = *y;
    *y = temp;
}

int main() {
    int a = 5, b = 10;
    swap(&a, &b);
    printf("a = %d, b = %d", a, b); // Outputs: a = 10, b = 5
    return 0;
}