【華爲OJ】表示數字

輸入：字符串

輸出：數字前後加*

如：

輸入：sfadf5678sdfm12w3o

輸出：sfadf*5678*sdfm*12*w*3*

#include <iostream>  
using namespace std;

int main()
{
	char str[100];
	gets_s(str);
	if (str[0] >= '0'&&str[0] <= '9')
	{
		cout << '*' << str[0];
	}
	else
		cout << str[0];
	for (int i = 1;i < strlen(str);i++)
	{
		if ((str[i] >= '0'&&str[i] <= '9')&&(str[i-1] <'0'||str[i-1] > '9')&& (str[i+1] < '0'||str[i+1] > '9'))
		{
			cout << "*" << str[i] << "*";
		}
		else if((str[i] >= '0'&&str[i] <= '9')&& (str[i-1] >= '0'&&str[i-1] <= '9')&& (str[i+1] < '0'||str[i+1] >'9'))
		{
			cout << str[i]<<"*";
		}
		else if ((str[i] >= '0'&&str[i] <= '9') && (str[i + 1] >='0'&&str[i +1] <= '9') && (str[i-1] < '0' || str[i - 1] >'9'))
		{
			cout << '*' << str[i];
		}
		else
		{
			cout << str[i];
		}
	}	
	return 0;
}

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