# include <stdio.h>

void SWAP(int *num1, int *num2){
	int buffer=0;

	printf("buffer=%d\tnum1=%d\tnum2=%d\n",buffer,*num1,*num2);

	buffer = *num1;
	printf("buffer=%d\tnum1=%d\tnum2=%d\n",buffer,*num1,*num2);
	*num1 = (*num2);
	printf("buffer=%d\tnum1=%d\tnum2=%d\n",buffer,*num1,*num2);
	*num2 = buffer;
	printf("buffer=%d\tnum1=%d\tnum2=%d\n",buffer,*num1,*num2);
}


void main(void){

	int num1=5,num2=9;

	printf("num1 = %d num2 = %d\n",num1,num2);

	SWAP(&num1,&num2);

	printf("num1 = %d num2 = %d\n",num1,num2);

}