求教高手（一个输出首字母的程序）
#include<iostream>
#include<string>
#include <vector>
using namespace std;
int main()
{
string line;
while(getline(cin,line))
{ vector<string> word;
int i=0;
int j=0;
for(;i<(line.size());i++)
{
if(line.substr(i,1)==" "||line.substr(i,1)=="-")
{
word.push_back(line.substr(j,i-j));j=i;
}
}
word.push_back(line.substr(j,i-j+1));
for(vector<string>::iterator p=word.begin();p!=word.end();p++)
{
if(*p!="a"&&*p!="an"&&*p!="the"&&*p!="for"&&*p!="and"&&*p!="of"&&*p!="A"&&*p!="AN"&&*p!="THE"&&*p!="FOR"&&*p!="OF"&&*p!="AND")
{cout<<(*p).substr(0,1);}
if(p==word.end()-1)
cout<<"\n";
}
}
return 0;
}
单词能被分割开，却不能通过{cout<<(*p).substr(0,1);}输出首字母，费解！
求教。
下为题目描述：
Description
给定一个由若干英文单词组成的字符串，生成一个由各首字母组成的缩写词（acronym），其中的the，a，an，of，for及and被忽略。
Input
输入数据有若干行，每行上有一个字符串。字符串中分隔单词的字符为一个空格或一个连字符(’-’)。单词中不包含连字符。字符串的长度不超过100个字符。
Output
对于每一个字符串，输出结果，每行最后有一个换行符。
Sample Input
United States of America
PEOPLE’S REPUBLIC OF CHINA
The Asia-Pacific Economic Cooperation
Organization of the Petroleum Exporting Countries
United Nation Educational Scientific and Culture Organization
Universal Serial Bus
Sample Output
USA
PRC
APEC
OPEC
UNESCO
USB
出自（ecnu online jidge）
[解决办法]
... for(; i < (line.size()); i++) { if(line.substr(i, 1) == " " || line.substr(i, 1) == "-") { word.push_back(line.substr(j, i - j)); j = i + 1;// 这里还要加一个' '或者'-'，所以是i + 1 } } word.push_back(line.substr(j, i - j));// 上面已经加了，这里就不加1了...
[解决办法]
#include<string>#include<cstring>#include<iostream>using std::string;const char* gStopWords[] = { "of ", "Of ", "OF ", "a ", "A ", "an ", "An ", "AN ", "the ", "The ", "THE ", "and ", "And ", "AND ", "for ", "For ", "FOR " };const int gWordCount = sizeof(gStopWords) / sizeof(const char*);string capitals(string str) { for (int i = 0; i < gWordCount; ++i) { size_t index = str.find(gStopWords[i], 0); while (index != string::npos) { str.replace(index, strlen(gStopWords[i]), ""); index = str.find(gStopWords[i], index); } } string ret(""); bool flag = true; for (string::iterator iter = str.begin(); iter != str.end(); ++iter) { if (flag) { ret.append(1, *iter); flag = false; } else { if (*iter == ' ' || *iter == '-') { flag = true; } } } return ret;}int main() { string str("The Asia-Pacific Economic Cooperation"); std::cout << capitals(str) << std::endl; return 0;}
[解决办法]