比较字符串（忽略空格，忽略大小写）

a A bb BB ccc CCC
Aa BBbb CCCccc

YES
源码如下：

#include <iostream>
using namespace std;

bool compareTwoStringIgnoreCases(string a,string b);
int main(){
	char  aString[30],bString[30];
	cout<<"input StringA:";
	cin.getline(aString,30);
	cout<<"input stringB:";
	cin.getline(bString,30);
	/*aString="a A bb BB ccc CCC";
	bString="Aa BBbb CCCccc";*/

	if(compareTwoStringIgnoreCases(aString,bString))
		cout<<"YES";
	else
		cout<<"NO";
	cout<<endl;
	return 0;
}
bool compareTwoStringIgnoreCases(string a,string b){
	int i,j;
	for (i=0,j=0;i<a.length() && j<b.length();)
	{
		if (a[i]==b[j]||abs(a[i]-b[j])==32)//ascii码：大写小写差32;空格的ascii码对应十进制为32
		{
			i++,j++;
		}
		else if (a[i] == 32)
			i++;
		else if (b[j] == 32)
			j++;
		else
			return false;
	}
	return true;
}