C++语言数据结构 串的基本操作实例代码

 #include using namespace std; typedef int Status; #define Max 20 #define OK 1 #define ERROR 0 #define OVERLOE -2 typedef struct//堆分配表示串 { char *ch; int length; }HString; //=================================================================== Status CreatHString(HString &H)//构造字符串 { H.length = 0; H.ch = (char *)malloc(Max*sizeof(char)); for (int i = 0; i <Max; i++) { H.ch[i]=getchar(); H.length++; if (getchar() == '\n') break; } return OK; }//CreatHString //=================================================================== Status PrintHString(HString H)//输出所输入的字符串 { if (H.length == 0) { cout << "空串！" << endl; return ERROR; } else for (int i = 0; i <H.length; i++) cout << H.ch[i] << " "; cout << endl; return OK; }//PrintHString //=================================================================== Status HStringLength(HString H)//求字符串的长度 { cout << "您输入的字符串长度为：" << endl; cout << H.length << endl; return OK; }//HStringLength //=================================================================== Status HStringCompare(HString H, HString T)//求两个字符串长度差（绝对值） { cout << "两个字符串的长度差为：" << endl; int L; L = H.length - T.length; if (L<0) cout << -L <=0) cout << L << endl; return OK; }//HStringCompare //=================================================================== Status ConcatHString(HString &S, HString H, HString T)//链接H和T { if (!(S.ch = (char *)malloc((H.length + T.length)*sizeof(char)))) exit(OVERLOE); for (int i = 0; i <H.length; i++) S.ch[i] = H.ch[i]; S.length = H.length + T.length; for (int j = H.length; j <S.length; j++) S.ch[j] = T.ch[j-H.length]; return OK; }//ConcatHString //=================================================================== Status SubHString(HString &Sub, HString S, int pos,int len) {//用Sub返回串S的第pos个字符起长度为len的子串 if (posS.length) { cout << "输入的位置有误！<i style="color:transparent">来源gaodai$ma#com搞$代*码网</i>" << endl; return ERROR; } if (lenS.length - pos + 1) { cout << "输入的长度有误！" << endl; return ERROR; } if (!len) { Sub.ch == NULL; Sub.length = 0; } else { Sub.ch = (char *)malloc(len*sizeof(char)); for (int i = 0; i > pos >> len; SubHString(Sub, S, pos, len); cout << "截取的子串为：" << endl; PrintHString(Sub); ClearHString(S); cout << "检验S清空后是否为空：" << endl; PrintHString(S); }//main