## Problem: Soroban

You know that Japan is the country with almost the largest ‘electronic devices per persion’ ratio. So you might be quite surprised to find out that the primary school in Japan teaches to count using a Soroban – an abacus developed in Japan. This phenomenon has its reason, of course, but we are not going to speak about them. Let’s have a look at the Soroban’s construction

Soroban consists of some number of rods, each rod contains five beads. We will assume that the rods are horizontal lines. One bead on each rod (the leftmost one) is divided from the others by a bar (the reckoning bar). This single bead is called ‘go-dama’ and four others are ‘ichi-damas’. Each rod is resposible for representing a single digit from 0 to 9. We can obtain the value of a digit by following simple algorithm:

-Set the value of a digit equal to 0.

-If the go-dama is shifted to the right, add 5.

-Add the number of ichi-damas shifted to the left.

Thus, the upper rod on the picture shows digit 0, the middle one shows digit 2 and the lower one shows 7. We will consider the top rod to represent the last decimal digit of a number, so the picture shows number 720.

Write the program that prints the way Soroban shows the given number n.

Input: There’re several test cases. Each test case has a line contains a single integer n(0<=n<=pow(10,9))

Output: For each test case: Print the description of the decimal digits of number n from the last one to the first one (as mentioned on the picture in the statement), one per line. Print the beads as large English letters ‘O’, rod pieces as character ‘-‘ and the reckoning bar as ‘|’. Print as many rods, as many digits are in the decimal representation of number n without leading zeroes. We can assume that number 0 has no leading zeroes.

Sample test:

And this is the way I solved this problem:

#include <stdio.h>

#include <iostream>using namespace std;

/*This function is used to print a decimal as its’ Soroban-abacus’ form*/

void Soroban(int a);int main(){

int n,a[1000],i=0,Count=0;

while(cin>>a[i]){

i++;

Count++;

}

for(i=0;i<Count;++i){

Soroban(a[i]);

/*Avoid leaving character “\n”*/

if(i!=Count-1) printf(“\n”);

}

}void Soroban(int a){

int temp;

do{

/*When finish, we needn’t print character ‘\n’ cause it was printed in function above*/

if(a/10==0){

temp=a%10;

if(temp>=0&&temp<=4){

printf(“O-|”);

for(int i=1;i<=temp;++i)

printf(“O”);

printf(“-“);

for(int j=4-temp;j>0;–j)

printf(“O”);

return;

}

if(temp>=5&&temp<=9){

printf(“-O|”);

for(int i=1;i<=temp-5;++i)

printf(“O”);

printf(“-“);

for(int j=4-(temp-5);j>0;–j)

printf(“O”);

return;

}

}

temp=a%10;

if(temp>=0&&temp<=4){

printf(“O-|”);

for(int i=1;i<=temp;++i)

printf(“O”);

printf(“-“);

for(int j=4-temp;j>0;–j)

printf(“O”);

printf(“\n”);

}

if(temp>=5&&temp<=9){

printf(“-O|”);

for(int i=1;i<=temp-5;++i)

printf(“O”);

printf(“-“);

for(int j=4-(temp-5);j>0;–j)

printf(“O”);

printf(“\n”);

}

a/=10;

}while(a!=0);

}Let’s compile and run this program on paper if there’re something you still not get.

## loctv 2:29 pm

onMarch 15, 2014 Permalink |This is my first post, so if there’re something wrong, please contact me