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string::replace
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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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | // 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 0; } |
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