#include <stdio.h>	

int main(void){	

	int Sum =0, i;	
	printf("Sum=%d\n",Sum);

	for(i=1; i<=100; i=i+1){

		Sum = Sum+i;
		printf("+[%d] = %d\n",i ,Sum);

	}
	
	printf("Answer is %d.\n",Sum);

	return 0;

}