函数原型：
string& replace (size_t pos, size_t len, const string& str);
具体请查阅C++开发文档。只贴示例代码。
示例代码：
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// replacing in a string#include <iostream>#include <string>int main (){ std::string base="this is a test string."; std::string str2="n example"; std::string str3="sample phrase"; std::string str4="useful."; // replace signatures used in the same order as described above: // Using positions: 0123456789*123456789*12345 std::string str=base; // "this is a test string." str.replace(9,5,str2); // "this is an example string." (1) str.replace(19,6,str3,7,6); // "this is an example phrase." (2) str.replace(8,10,"just a"); // "this is just a phrase." (3) str.replace(8,6,"a shorty",7); // "this is a short phrase." (4) str.replace(22,1,3,‘!‘); // "this is a short phrase!!!" (5) // Using iterators: 0123456789*123456789* str.replace(str.begin(),str.end()-3,str3); // "sample phrase!!!" (1) str.replace(str.begin(),str.begin()+6,"replace"); // "replace phrase!!!" (3) str.replace(str.begin()+8,str.begin()+14,"is coolness",7); // "replace is cool!!!" (4) str.replace(str.begin()+12,str.end()-4,4,‘o‘); // "replace is cooool!!!" (5) str.replace(str.begin()+11,str.end(),str4.begin(),str4.end());// "replace is useful." (6) std::cout << str << ‘\n‘; return
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原文地址：http://www.cnblogs.com/cpphello/p/3762492.html
