字符串判等

判断两个由大小写字母和空格组成的字符串在忽略大小写，且忽略空格后是否相等。

Input两行，每行包含一个字符串。Output若两个字符串相等，输出YES，否则输出NO。Sample Input

a A bb BB ccc CCC
Aa BBbb CCCccc

Sample Output

YES

#include <stdio.h>
#include <string.h>

void fun(char s[])
{
    int i, j;

    for(i=j=0; s[j]!='\0'; j++)
    {
        if(s[j] != ' ')
            s[i++] = s[j];
    }
    s[i] = '\0';
}


void cha(char p[])
{
    int i;
    for(i=0; p[i]!='\0'; i++)
    {
        if(p[i] >= 'A' && p[i] <= 'Z')
            p[i] = p[i]+32;
    }
}
int main()
{
    char a[100], b[100];
    int len, i, j;
    gets(a);
    gets(b);

    fun(a);
    fun(b);

    cha(a);
    cha(b);
    for(i=0; a[i]||b[i]; i++)
    {
        if(a[i] != b[i])
            break;
    }
  
    if(a[i] == b[i])
        printf("YES\n");
    else
        printf("NO\n");
    return 0;
}

#include<stdio.h>
#include<ctype.h>
#include<string.h>
int main()
{
char s1[128], s2[128];
int i,j;
gets(s1);
for(i=0, j=0; s1[i]; i++)
    if(s1[i] == ' ')
        ;
else if(isupper(s1[i]))
s1[j++] = tolower(s1[i]);
else s1[j++] = s1[i];
s1[j] = '\0';

        gets(s2);
for(i=0, j=0; s2[i]; i++)
if(s2[i] == ' ')
    ;
   else if(isupper(s2[i]))
s2[j++] = tolower(s2[i]);
else s2[j++] = s2[i];
s2[j] = '\0';
        if(strcmp(s1, s2))
printf("NO\n");
else printf("YES\n");
return 0;

}