AC代码:
#include <iostream> #include <cstdio> #include <cstring> #define Max 105 using namespace std; int main(void) { freopen("in.txt","r",stdin); int i,j,sum1,sum2,flag,a,len; char s[Max],s1[Max]; while(gets(s)!=NULL) { len=strlen(s); sum1=sum2=0; flag=0; for(i=0,j=0;i<len;i++) { if(s[i]>='a'&&s[i]<='z') s1[j++]=s[i]; if(s[i]==' '&&s[i-1]!='+') { s1[j]='