查找字符串(C++实现),不使用库函数:
// SubString.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <iostream> using namespace std; bool FindSubString(char* srcStr,char* subStr) { char* p = srcStr; char* q = subStr; if(p ==NULL || *p== '\0') return false; while(p != NULL) { //subStr 循环比较结束 if(*q == '\0') return true; //srcStr 比 subStr 长度短 if(*p =='\0') return false; if(*p != *q) { p ++; q = subStr; } else { p ++; q ++; } } return false; } int _tmain(int argc, _TCHAR* argv[]) { char srcStr[] = "Kobe Bean Bryant, nicknamed the '小飞侠', is an American professional basketball player for the Los Angeles Lakers of the National Basketball Association"; char subStr[] = "Bryant"; if(FindSubString(srcStr,subStr)) cout <<"I find substring" <<endl; else cout <<"I do not find substring" << endl; cin.get(); return 0; }