#include <stdio.h>

int x;
void mondai1(int b){
	x=b;
}
void mondai2(void){
	static int c=10;
	x=c;
	c++;
}
int mondai3(int d){
	x++;
	d++;
	return d;
}

int main(void) {
	
printf("x=%d\n",x);
x=101;
printf("x=%d\n",x);

mondai1(102);
printf("x=%d\n",x);
mondai2();
mondai2();
mondai2();
printf("x=%d\n",x);
for(int i=103;i<104;i++){
	int x=i;
	printf("x=%d\n",x);
	x=mondai3(i);
	printf("x=%d\n",x);
}
printf("x=%d\n",x);
	return 0;
}