Marvelous Mazes UVA - 445

#include<iostream>
#include<stdio.h>
#include<string>
#include<cstring>
#define maxn 150
using namespace std;
char mapn[maxn][maxn];
int main()
{
    char str[150];
    while(gets(str)!=NULL)
    {
        int sum;
        for(int i=0;i<strlen(str);)
        {
            sum = 0;
            if(str[i] == '!')
                printf("\n");
            while(str[i]>='0'&&str[i]<='9')//数字累加，11累加为2
            {
                sum += str[i] - '0';
                i++;
            }
            if(str[i] == 'b')
                str[i] = ' ';
            for(int j=0;j<sum;j++)
                printf("%c",str[i]);
            i++;
        }
        printf("\n");
    }
    return 0;
}