수정버전 ¶

~cpp 
#include <stdio.h>
#include <ctype.h>
#include <conio.h>

const int MAX_SIZE_NAME=25;
const int BACK_SPACE=8; 
const int ENTER=13; 

void input_and_calculate(int*);
int input_and_return_cursur(char*, int);
void calculate(char*, int, int*, int);
int input_to_calculator(int);
void output(int*);

void main()
{
	int name_score[2];
	input_and_calculate(name_score);
	output(name_score);
}

void input_and_calculate(int *name_score)
{
	for (register int i=0; i<2; ++i)
	{
		char temp_save_name[MAX_SIZE_NAME]={0,};
		calculate(temp_save_name, input_and_return_cursur(temp_save_name, i), name_score, i);
		printf ("\n");
	}
}


int input_and_return_cursur(char *temp_save_name, int i)
{
	int cursur=0;
	printf ("%d번째 사람의 이름을 입력해주세요.\n>>",i+1);
	while (cursur<MAX_SIZE_NAME) 
	{ 
		char temp_char; 
		temp_char=getche();
		if (BACK_SPACE==temp_char) 
		{ 
			printf(" \b");
			--cursur; 
		}
		else if(ENTER==temp_char)
			break;
		else
		{
			temp_save_name[cursur]=temp_char;
			++cursur;
		}
	}
	return cursur;
}

void calculate(char *temp_save_name, int cursur, int *name_score, int i )
{

	for (register int j=0; j<cursur; ++j)
	{
		tolower(temp_save_name[j]);
		if ('a'<=temp_save_name[j] && temp_save_name[j]<='z')
			name_score[i]+=temp_save_name[j]-'a'+1;
	}
	name_score[i]=input_to_calculator(name_score[i]);
}

int input_to_calculator(int number)
{
	if (number<10)
		return number;
	else
	{
		int temp_number=0;
		while (number>0)
		{
			temp_number+=number%10;
			number/=10;
		}
		return input_to_calculator(temp_number);
	}
}

void output(int *name_score)
{
	float result_percent;
	if (name_score[0]>name_score[1])
		result_percent=(float)name_score[1]*100/(float)name_score[0];
	else
		result_percent=(float)name_score[0]*100/(float)name_score[1];
	printf("두사람의 사랑지수는 %.2f%%입니다.",result_percent);
}