C++ find函数简单应用

find函数可在已知字符串中查找子串

#include
  
   
#include
   
     using namespace std; int main() { string s1 = "Rey Dennis Steckler"; string s2 = "Dennis"; string s3 = "Ed Wood"; int f; f = s1.find(s2); if(f < s1.length()) cout<<"Found at index: "<